Convert to Interval Notation -3r>15

$- 3 r > 15$

Step 1

Divide each term in $- 3 r > 15$ by $- 3$ and simplify.

Divide each term in $- 3 r > 15$ by $- 3$ . When multiplying or dividing both sides of an inequality by a negative value, flip the direction of the inequality sign.

$\frac{- 3 r}{- 3} < \frac{15}{- 3}$

Simplify the left side.

Cancel the common factor of $- 3$ .

Cancel the common factor.

$\frac{- 3 r}{- 3} < \frac{15}{- 3}$

Divide $r$ by $1$ .

$r < \frac{15}{- 3}$

Simplify the right side.

Divide $15$ by $- 3$ .

$r < - 5$

Step 2

Convert the inequality to interval notation.

$(- \infty, - 5)$

Step 3

Convert to Interval Notation -3r>15

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