# How do you solve 3x=-21?

Dec 28, 2016

$x = - 7$

#### Explanation:

$3 x = - 21$

Divide both sides by $3$.

$\frac{3 x}{3} = - \frac{21}{3}$

$\frac{\cancel{3} x}{1 \cancel{3}} = - \frac{7 \cancel{21}}{1 \cancel{3}}$

$x = - 7$