How do you solve 7 + 2(a - 3) = -9?

Jun 13, 2015

 color(red)(a=-5

Explanation:

$7 + 2 \left(a - 3\right) = - 9$

$7 + 2 a - 6 = - 9$
$7 - 6 + 9 = - 2 a$
$10 = - 2 a$
 color(red)(a=-5