Answer:
x = 8 since 3 × 8 = 24
Step-by-step explanation:
15 - x = 3x + 3
15 - x = 3•x + 3
4x = 12
x = 3
Sorry, I change the b and a into x's if that's fine with you.
$7
-4
You multiply -13*-4=52
