# How do you solve 3(4 - a) > 21?

Nov 3, 2015

$a < - 3$

#### Explanation:

Divide both sides by $3$

$4 - a > 7$

Subtract $4$ form both sides

$- a > 3$

Divide both sides by $- 1$. Remember when dividing by a negative number we must flip the inequality sign.

$a < - 3$