Solve by Substitution x+y=2xy , x+z=4xz , y+z=8yz

$x + y = 2 x y$ , $x + z = 4 x z$ , $y + z = 8 y z$

Step 1

Solve for $x$ in $x + y = 2 x y$ .

Subtract $2 x y$ from both sides of the equation.

$x + y - 2 x y = 0$

$x + z = 4 x z$

$y + z = 8 y z$

Subtract $y$ from both sides of the equation.

$x - 2 x y = - y$

$x + z = 4 x z$

$y + z = 8 y z$

Factor $x$ out of $x - 2 x y$ .

Factor $x$ out of $x^{1}$ .

$x \cdot 1 - 2 x y = - y$

$x + z = 4 x z$

$y + z = 8 y z$

Factor $x$ out of $- 2 x y$ .

$x \cdot 1 + x (- 2 y) = - y$

$x + z = 4 x z$

$y + z = 8 y z$

Factor $x$ out of $x \cdot 1 + x (- 2 y)$ .

$x \cdot (1 - 2 y) = - y$

$x + z = 4 x z$

$y + z = 8 y z$

Multiply $x$ by $1 - 2 y$ .

$x (1 - 2 y) = - y$

$x + z = 4 x z$

$y + z = 8 y z$

$x (1 - 2 y) = - y$

$x + z = 4 x z$

$y + z = 8 y z$

Divide each term in $x (1 - 2 y) = - y$ by $1 - 2 y$ and simplify.

Divide each term in $x (1 - 2 y) = - y$ by $1 - 2 y$ .

$\frac{x (1 - 2 y)}{1 - 2 y} = \frac{- y}{1 - 2 y}$

$x + z = 4 x z$

$y + z = 8 y z$

Simplify the left side.

Cancel the common factor of $1 - 2 y$ .

Cancel the common factor.

$\frac{x (1 - 2 y)}{1 - 2 y} = \frac{- y}{1 - 2 y}$

$x + z = 4 x z$

$y + z = 8 y z$

Divide $x$ by $1$ .

$x = \frac{- y}{1 - 2 y}$

$x + z = 4 x z$

$y + z = 8 y z$

$x = \frac{- y}{1 - 2 y}$

$x + z = 4 x z$

$y + z = 8 y z$

$x = \frac{- y}{1 - 2 y}$

$x + z = 4 x z$

$y + z = 8 y z$

Simplify the right side.

Move the negative in front of the fraction.

$x = - \frac{y}{1 - 2 y}$

$x + z = 4 x z$

$y + z = 8 y z$

$x = - \frac{y}{1 - 2 y}$

$x + z = 4 x z$

$y + z = 8 y z$

$x = - \frac{y}{1 - 2 y}$

$x + z = 4 x z$

$y + z = 8 y z$

$x = - \frac{y}{1 - 2 y}$

$x + z = 4 x z$

$y + z = 8 y z$

Step 2

Replace all occurrences of $x$ with $- \frac{y}{1 - 2 y}$ in each equation.

Replace all occurrences of $x$ in $x + z = 4 x z$ with $- \frac{y}{1 - 2 y}$ .

$(- \frac{y}{1 - 2 y}) + z = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Simplify $(- \frac{y}{1 - 2 y}) + z = 4 (- \frac{y}{1 - 2 y}) \cdot z$ .

Simplify the left side.

Simplify $(- \frac{y}{1 - 2 y}) + z$ .

To write $z$ as a fraction with a common denominator, multiply by $\frac{1 - 2 y}{1 - 2 y}$ .

$- \frac{y}{1 - 2 y} + z \cdot \frac{1 - 2 y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Simplify terms.

Combine $z$ and $\frac{1 - 2 y}{1 - 2 y}$ .

$- \frac{y}{1 - 2 y} + \frac{z (1 - 2 y)}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Combine the numerators over the common denominator.

$\frac{- y + z (1 - 2 y)}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$\frac{- y + z (1 - 2 y)}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Simplify the numerator.

Apply the distributive property.

$\frac{- y + z \cdot 1 + z (- 2 y)}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Multiply $z$ by $1$ .

$\frac{- y + z + z (- 2 y)}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Rewrite using the commutative property of multiplication.

$\frac{- y + z - 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$\frac{- y + z - 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Simplify with factoring out.

Factor $- 1$ out of $- y$ .

$\frac{- (y) + z - 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Factor $- 1$ out of $z$ .

$\frac{- (y) - 1 (- z) - 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Factor $- 1$ out of $- (y) - 1 (- z)$ .

$\frac{- (y - z) - 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Factor $- 1$ out of $- 2 z y$ .

$\frac{- (y - z) - (2 z y)}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Factor $- 1$ out of $- (y - z) - (2 z y)$ .

$\frac{- (y - z + 2 z y)}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Simplify the expression.

Rewrite $- (y - z + 2 z y)$ as $- 1 (y - z + 2 z y)$ .

$\frac{- 1 (y - z + 2 z y)}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Move the negative in front of the fraction.

$- \frac{y - z + 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$- \frac{y - z + 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$- \frac{y - z + 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$- \frac{y - z + 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$- \frac{y - z + 2 z y}{1 - 2 y} = 4 (- \frac{y}{1 - 2 y}) \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Simplify the right side.

Simplify $4 (- \frac{y}{1 - 2 y}) \cdot z$ .

Multiply $4 (- \frac{y}{1 - 2 y})$ .

Multiply $- 1$ by $4$ .

$- \frac{y - z + 2 z y}{1 - 2 y} = - 4 \frac{y}{1 - 2 y} \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Combine $- 4$ and $\frac{y}{1 - 2 y}$ .

$- \frac{y - z + 2 z y}{1 - 2 y} = \frac{- 4 y}{1 - 2 y} \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$- \frac{y - z + 2 z y}{1 - 2 y} = \frac{- 4 y}{1 - 2 y} \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Move the negative in front of the fraction.

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{(4) y}{1 - 2 y} \cdot z$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Combine $z$ and $\frac{4 y}{1 - 2 y}$ .

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{z (4 y)}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Move $4$ to the left of $z$ .

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y + z = 8 y z$

Step 3

Solve for $y$ in $y + z = 8 y z$ .

Subtract $8 y z$ from both sides of the equation.

$y + z - 8 y z = 0$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Subtract $z$ from both sides of the equation.

$y - 8 y z = - z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Factor $y$ out of $y - 8 y z$ .

Factor $y$ out of $y^{1}$ .

$y \cdot 1 - 8 y z = - z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Factor $y$ out of $- 8 y z$ .

$y \cdot 1 + y (- 8 z) = - z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Factor $y$ out of $y \cdot 1 + y (- 8 z)$ .

$y \cdot (1 - 8 z) = - z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Multiply $y$ by $1 - 8 z$ .

$y (1 - 8 z) = - z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y (1 - 8 z) = - z$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Divide each term in $y (1 - 8 z) = - z$ by $1 - 8 z$ and simplify.

Divide each term in $y (1 - 8 z) = - z$ by $1 - 8 z$ .

$\frac{y (1 - 8 z)}{1 - 8 z} = \frac{- z}{1 - 8 z}$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Simplify the left side.

Cancel the common factor of $1 - 8 z$ .

Cancel the common factor.

$\frac{y (1 - 8 z)}{1 - 8 z} = \frac{- z}{1 - 8 z}$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Divide $y$ by $1$ .

$y = \frac{- z}{1 - 8 z}$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y = \frac{- z}{1 - 8 z}$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y = \frac{- z}{1 - 8 z}$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Simplify the right side.

Move the negative in front of the fraction.

$y = - \frac{z}{1 - 8 z}$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y = - \frac{z}{1 - 8 z}$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y = - \frac{z}{1 - 8 z}$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

$y = - \frac{z}{1 - 8 z}$

$- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$

$x = - \frac{y}{1 - 2 y}$

Step 4

Replace all occurrences of $y$ with $- \frac{z}{1 - 8 z}$ in each equation.

Replace all occurrences of $y$ in $- \frac{y - z + 2 z y}{1 - 2 y} = - \frac{4 z y}{1 - 2 y}$ with $- \frac{z}{1 - 8 z}$ .

$- \frac{(- \frac{z}{1 - 8 z}) - z + 2 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Simplify $- \frac{(- \frac{z}{1 - 8 z}) - z + 2 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$ .

Simplify the left side.

Simplify $- \frac{(- \frac{z}{1 - 8 z}) - z + 2 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$ .

Multiply the numerator and denominator of the fraction by $1 - 8 z$ .

Multiply $\frac{- \frac{z}{1 - 8 z} - z + 2 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$ by $\frac{1 - 8 z}{1 - 8 z}$ .

$- (\frac{1 - 8 z}{1 - 8 z} \cdot \frac{- \frac{z}{1 - 8 z} - z + 2 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}) = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine.

$- \frac{(1 - 8 z) (- \frac{z}{1 - 8 z} - z + 2 z (- \frac{z}{1 - 8 z}))}{(1 - 8 z) (1 - 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$- \frac{(1 - 8 z) (- \frac{z}{1 - 8 z} - z + 2 z (- \frac{z}{1 - 8 z}))}{(1 - 8 z) (1 - 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Apply the distributive property.

$- \frac{(1 - 8 z) (- \frac{z}{1 - 8 z}) + (1 - 8 z) (- z) + (1 - 8 z) (2 z (- \frac{z}{1 - 8 z}))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Cancel the common factor of $1 - 8 z$ .

Move the leading negative in $- \frac{z}{1 - 8 z}$ into the numerator.

$- \frac{(1 - 8 z) (\frac{- z}{1 - 8 z}) + (1 - 8 z) (- z) + (1 - 8 z) (2 z (- \frac{z}{1 - 8 z}))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Cancel the common factor.

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Rewrite the expression.

$- \frac{- z + (1 - 8 z) (- z) + (1 - 8 z) (2 z (- \frac{z}{1 - 8 z}))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$- \frac{- z + (1 - 8 z) (- z) + (1 - 8 z) (2 z (- \frac{z}{1 - 8 z}))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Simplify the numerator.

Factor $z$ out of $- z + (1 - 8 z) (- z) + (1 - 8 z) \cdot 2 z (- \frac{z}{1 - 8 z})$ .

Factor $z$ out of $- z$ .

$- \frac{z \cdot - 1 + (1 - 8 z) (- z) + (1 - 8 z) \cdot (2 z (- \frac{z}{1 - 8 z}))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $z$ out of $(1 - 8 z) (- z)$ .

$- \frac{z \cdot - 1 + z ((1 - 8 z) \cdot (- 1)) + (1 - 8 z) \cdot (2 z (- \frac{z}{1 - 8 z}))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $z$ out of $(1 - 8 z) \cdot 2 z (- \frac{z}{1 - 8 z})$ .

$- \frac{z \cdot - 1 + z ((1 - 8 z) \cdot (- 1)) + z ((1 - 8 z) \cdot (2 (- \frac{z}{1 - 8 z})))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $z$ out of $z \cdot - 1 + z ((1 - 8 z) \cdot (- 1))$ .

$- \frac{z \cdot (- 1 + (1 - 8 z) \cdot (- 1)) + z ((1 - 8 z) \cdot (2 (- \frac{z}{1 - 8 z})))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $z$ out of $z \cdot (- 1 + (1 - 8 z) \cdot (- 1)) + z ((1 - 8 z) \cdot 2 (- \frac{z}{1 - 8 z}))$ .

$- \frac{z (- 1 + (1 - 8 z) \cdot (- 1) + (1 - 8 z) \cdot (2 (- \frac{z}{1 - 8 z})))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Apply the distributive property.

$- \frac{z (- 1 + 1 \cdot - 1 - 8 z \cdot - 1 + (1 - 8 z) \cdot (2 (- \frac{z}{1 - 8 z})))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply $- 1$ by $1$ .

$- \frac{z (- 1 - 1 - 8 z \cdot - 1 + (1 - 8 z) \cdot (2 (- \frac{z}{1 - 8 z})))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply $- 1$ by $- 8$ .

$- \frac{z (- 1 - 1 + 8 z + (1 - 8 z) \cdot (2 (- \frac{z}{1 - 8 z})))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Cancel the common factor of $1 - 8 z$ .

Move the leading negative in $- \frac{z}{1 - 8 z}$ into the numerator.

$- \frac{z (- 1 - 1 + 8 z + (1 - 8 z) \cdot (2 (\frac{- z}{1 - 8 z})))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $1 - 8 z$ out of $(1 - 8 z) \cdot 2$ .

$- \frac{z (- 1 - 1 + 8 z + (1 - 8 z) (2) (\frac{- z}{1 - 8 z}))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Cancel the common factor.

$- \frac{z (- 1 - 1 + 8 z + (1 - 8 z) \cdot (2 (\frac{- z}{1 - 8 z})))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Rewrite the expression.

$- \frac{z (- 1 - 1 + 8 z + 2 (- z))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$- \frac{z (- 1 - 1 + 8 z + 2 (- z))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply $- 1$ by $2$ .

$- \frac{z (- 1 - 1 + 8 z - 2 z)}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Subtract $1$ from $- 1$ .

$- \frac{z (- 2 + 8 z - 2 z)}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Subtract $2 z$ from $8 z$ .

$- \frac{z (- 2 + 6 z)}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $2$ out of $- 2 + 6 z$ .

Factor $2$ out of $- 2$ .

$- \frac{z (2 (- 1) + 6 z)}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $2$ out of $6 z$ .

$- \frac{z (2 (- 1) + 2 (3 z))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $2$ out of $2 (- 1) + 2 (3 z)$ .

$- \frac{z (2 (- 1 + 3 z))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Simplify the denominator.

Factor $1 - 8 z$ out of $(1 - 8 z) \cdot 1 + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))$ .

Factor $1 - 8 z$ out of $(1 - 8 z) \cdot 1$ .

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (1) + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $1 - 8 z$ out of $(1 - 8 z) (1) + (1 - 8 z) (- 2 (- \frac{z}{1 - 8 z}))$ .

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (1 - 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (1 - 2 (- \frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply $- 2 (- \frac{z}{1 - 8 z})$ .

Multiply $- 1$ by $- 2$ .

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (1 + 2 (\frac{z}{1 - 8 z}))} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine $2$ and $\frac{z}{1 - 8 z}$ .

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (1 + \frac{2 z}{1 - 8 z})} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (1 + \frac{2 z}{1 - 8 z})} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Write $1$ as a fraction with a common denominator.

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (\frac{1 - 8 z}{1 - 8 z} + \frac{2 z}{1 - 8 z})} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine the numerators over the common denominator.

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (\frac{1 - 8 z + 2 z}{1 - 8 z})} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Add $- 8 z$ and $2 z$ .

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (\frac{1 - 6 z}{1 - 8 z})} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$- \frac{z \cdot (2 (- 1 + 3 z))}{(1 - 8 z) (\frac{1 - 6 z}{1 - 8 z})} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Move $2$ to the left of $z$ .

$- \frac{2 \cdot (z (- 1 + 3 z))}{(1 - 8 z) (\frac{1 - 6 z}{1 - 8 z})} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $\frac{1 - 6 z}{1 - 8 z}$ out of $\frac{2 \cdot z (- 1 + 3 z)}{(1 - 8 z) \frac{1 - 6 z}{1 - 8 z}}$ .

$- (\frac{1 - 8 z}{1 - 6 z} \cdot \frac{2 \cdot (z (- 1 + 3 z))}{1 - 8 z}) = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Cancel the common factor of $1 - 8 z$ .

Cancel the common factor.

$- (\frac{1 - 8 z}{1 - 6 z} \cdot \frac{2 \cdot (z (- 1 + 3 z))}{1 - 8 z}) = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Rewrite the expression.

$- (\frac{1}{1 - 6 z} \cdot (2 \cdot (z (- 1 + 3 z)))) = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$- (\frac{1}{1 - 6 z} \cdot (2 \cdot (z (- 1 + 3 z)))) = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine $2$ and $\frac{1}{1 - 6 z}$ .

$- (\frac{2}{1 - 6 z} \cdot (z (- 1 + 3 z))) = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine $z$ and $\frac{2}{1 - 6 z}$ .

$- (\frac{z \cdot 2}{1 - 6 z} \cdot (- 1 + 3 z)) = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Move $2$ to the left of $z$ .

$- (\frac{2 \cdot z}{1 - 6 z} \cdot (- 1 + 3 z)) = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply $\frac{2 z}{1 - 6 z}$ by $- 1 + 3 z$ .

$- \frac{2 z (- 1 + 3 z)}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Rewrite $- 1$ as $- 1 (1)$ .

$- \frac{2 z (- 1 \cdot 1 + 3 z)}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $- 1$ out of $3 z$ .

$- \frac{2 z (- 1 \cdot 1 - (- 3 z))}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Factor $- 1$ out of $- 1 (1) - (- 3 z)$ .

$- \frac{2 z (- 1 (1 - 3 z))}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Simplify the expression.

Move the negative in front of the fraction.

$\frac{(2 z) (1 - 3 z)}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply $- 1$ by $- 1$ .

$1 (\frac{(2 z) (1 - 3 z)}{1 - 6 z}) = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply $\frac{(2 z) (1 - 3 z)}{1 - 6 z}$ by $1$ .

$\frac{(2 z) (1 - 3 z)}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Reorder factors in $\frac{(2 z) (1 - 3 z)}{1 - 6 z}$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Simplify the right side.

Simplify $- \frac{4 z (- \frac{z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$ .

Simplify the numerator.

Multiply $- 1$ by $4$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{- 4 z \frac{z}{1 - 8 z}}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine $- 4$ and $\frac{z}{1 - 8 z}$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{z (\frac{- 4 z}{1 - 8 z})}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine $z$ and $\frac{- 4 z}{1 - 8 z}$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{z (- 4 z)}{1 - 8 z}}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{z (- 4 z)}{1 - 8 z}}{1 - 2 (- \frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Simplify the denominator.

Multiply $- 2 (- \frac{z}{1 - 8 z})$ .

Multiply $- 1$ by $- 2$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{z (- 4 z)}{1 - 8 z}}{1 + 2 (\frac{z}{1 - 8 z})}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine $2$ and $\frac{z}{1 - 8 z}$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{z (- 4 z)}{1 - 8 z}}{1 + \frac{2 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{z (- 4 z)}{1 - 8 z}}{1 + \frac{2 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Write $1$ as a fraction with a common denominator.

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{z (- 4 z)}{1 - 8 z}}{\frac{1 - 8 z}{1 - 8 z} + \frac{2 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine the numerators over the common denominator.

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{z (- 4 z)}{1 - 8 z}}{\frac{1 - 8 z + 2 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Add $- 8 z$ and $2 z$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{z (- 4 z)}{1 - 8 z}}{\frac{1 - 6 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{z (- 4 z)}{1 - 8 z}}{\frac{1 - 6 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Simplify the numerator.

Raise $z$ to the power of $1$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{- 4 (z \cdot z)}{1 - 8 z}}{\frac{1 - 6 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Raise $z$ to the power of $1$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{- 4 (z \cdot z)}{1 - 8 z}}{\frac{1 - 6 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{- 4 z^{1 + 1}}{1 - 8 z}}{\frac{1 - 6 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Add $1$ and $1$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{- 4 z^{2}}{1 - 8 z}}{\frac{1 - 6 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{\frac{- 4 z^{2}}{1 - 8 z}}{\frac{1 - 6 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Move the negative in front of the fraction.

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{- \frac{4 z^{2}}{1 - 8 z}}{\frac{1 - 6 z}{1 - 8 z}}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply the numerator by the reciprocal of the denominator.

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - (- \frac{4 z^{2}}{1 - 8 z} \cdot \frac{1 - 8 z}{1 - 6 z})$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Cancel the common factor of $1 - 8 z$ .

Move the leading negative in $- \frac{4 z^{2}}{1 - 8 z}$ into the numerator.

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - (\frac{- 4 z^{2}}{1 - 8 z} \cdot \frac{1 - 8 z}{1 - 6 z})$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Cancel the common factor.

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - (\frac{- 4 z^{2}}{1 - 8 z} \cdot \frac{1 - 8 z}{1 - 6 z})$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Rewrite the expression.

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - (- 4 z^{2} \frac{1}{1 - 6 z})$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - (- 4 z^{2} \frac{1}{1 - 6 z})$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine $- 4$ and $\frac{1}{1 - 6 z}$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - (z^{2} (\frac{- 4}{1 - 6 z}))$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Combine $z^{2}$ and $\frac{- 4}{1 - 6 z}$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{z^{2} \cdot - 4}{1 - 6 z}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Simplify the expression.

Move $- 4$ to the left of $z^{2}$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = - \frac{- 4 \cdot z^{2}}{1 - 6 z}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Move the negative in front of the fraction.

$\frac{2 z (1 - 3 z)}{1 - 6 z} = \frac{(4) \cdot z^{2}}{1 - 6 z}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

$\frac{2 z (1 - 3 z)}{1 - 6 z} = \frac{(4) \cdot z^{2}}{1 - 6 z}$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply $- - \frac{4 z^{2}}{1 - 6 z}$ .

Multiply $- 1$ by $- 1$ .

$\frac{2 z (1 - 3 z)}{1 - 6 z} = 1 (\frac{4 z^{2}}{1 - 6 z})$

$y = - \frac{z}{1 - 8 z}$

$x = - \frac{y}{1 - 2 y}$

Multiply $\frac{4 z^{2}}{1 - 6 z}$ by $1$ .