Question

question
solve for b.
3b - 39 = -78

Explanation:

Step1: Add 39 to both sides

$3b - 39 + 39 = -78 + 39$
$3b = -39$

Step2: Divide by 3 on both sides

$\frac{3b}{3} = \frac{-39}{3}$
$b = -13$

Answer:

$b = -13$