Answer:
I'm pretty sure it b
Step-by-step explanation:
I think its b
They show the decomposition of a multiplication expression into smaller parts
<h3>
Answer: x = 3</h3>
To get that answer, we replace y with 8 and then isolate x.
5x-7 = y
5x-7 = 8
5x = 8+7
5x = 15
x = 15/5
x = 3