What is the solution of the equation -4(z + 12) = 36 when solving for z?

Question

A. -6
B. 24
C. 21
D. -21

Answer 1

To solve for z in the equation -4(z + 12) = 36, you need to first distribute the -4:

-4z - 48 = 36

Next, add 48 to both sides to isolate the variable term:

-4z = 36 + 48
-4z = 84

Divide both sides by -4 to solve for z:

z = 84 / -4
z = -21

Therefore, the solution for z is D. -21.