# How do you solve -3( 3s - 4) - 12= - 3( 7s + 4) - 5?

Jun 25, 2017

$- \frac{17}{12}$

#### Explanation:

First, distribute all the terms on the outside:

$- 9 s + 12 - 12 = - 21 s - 12 - 5$

Combine the constants:

$- 9 s = - 21 s - 17$

Move $- 21 s$ to the other side:

$12 s = - 17$

Divide both sides by $12$:

$s = - \frac{17}{12}$