Answer:
x = 0
Step-by-step explanation:
The goal is to isolate x. For this equation, you need to distribute the -3 to the terms inside the parentheses first. Then, add both sides by 12. Finally, divide the 24 by -3 in order to finally isolate x.
[tex]-3 (x + 4) = 12\\-3x - 12 = 12 \\-3x = 24\\x = - 8[/tex]
Thus, x = -8.