Answer:
n = 9
Step-by-step explanation:
Step 1: Write equation
-4(9n + 9) = -12(4n - 6)
Step 2: Solve for n
Distribute: -36n - 36 = -48n + 72
Add 48n to both sides: 12n - 36 = 72
Add 36 to both sides: 12n = 108
Divide both sides by 12: n = 9
Step 3: Check
Plug in n to verify if it's a solution.
-4(9(9) + 9) = -12(4(9) - 6)
-4(81 + 9) = -12(36 - 6)
-4(90) = -12(30)
-360 = -360
