Question

what is the solution of the equation -4(z + 12) = 36 when solving for z? (1 point)
-21
21
-6
24

Explanation:

Step1: Distribute -4

$-4(z + 12)=-4z-48$. So the equation becomes $-4z - 48=36$.

Step2: Add 48 to both sides

$-4z-48 + 48=36 + 48$, which simplifies to $-4z=84$.

Step3: Divide both sides by -4

$\frac{-4z}{-4}=\frac{84}{-4}$, so $z=-21$.

Answer:

A. -21