Solve for x: 3(x + 7) + 9 = 15.
Note
First subtract 9: 3(x + 7) = 6. Then divide by 3: x + 7 = 2. Finally subtract 7, giving x = -5.
Solve for x: 3(x + 7) + 9 = 15.
First subtract 9: 3(x + 7) = 6. Then divide by 3: x + 7 = 2. Finally subtract 7, giving x = -5.