Question 808250
-4(-3 - 2z) = 9z

-4 * -3 = 12

-4 * -2Z = 8Z

Therefore:

12 + 8z = 9z

Subtract 8z from each side of the equation.

12 + 8z - 8z = 9z - 8z

12 = 1z


Answer:

z = 12




Lennox Obuong 
Algebra Tutor
Indianapolis, Indiana