Step-by-step explanation:

Then collect like terms
answer is x = 4
Answer:
b.
Step-by-step explanation:
b and c have the same amount of sqaures but b is facing the same way.
Answer:
54
Step-by-step explanation:
54
Answer:
(15+(3-6))x4
Step-by-step explanation:
1. 3-6 = -3
2. 15+-3 = 12
3. 12x4 = 48