Evaluate -3 1/8

$- 3 \frac{1}{8}$

Step 1

A mixed number is an addition of its whole and fractional parts.

$- (3 + \frac{1}{8})$

Step 2

Add $3$ and $\frac{1}{8}$ .

To write $3$ as a fraction with a common denominator, multiply by $\frac{8}{8}$ .

$- (3 \cdot \frac{8}{8} + \frac{1}{8})$

Combine $3$ and $\frac{8}{8}$ .

$- (\frac{3 \cdot 8}{8} + \frac{1}{8})$

Combine the numerators over the common denominator.

$- \frac{3 \cdot 8 + 1}{8}$

Simplify the numerator.

Multiply $3$ by $8$ .

$- \frac{24 + 1}{8}$

Add $24$ and $1$ .

$- \frac{25}{8}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$- \frac{25}{8}$

Decimal Form:

$- 3.125$

Mixed Number Form:

$- 3 \frac{1}{8}$