This question is confusing. Please help me!

Answer:
x = 18
Step-by-step explanation:
Given:
Finding x for which 3b = 5a:
Answer:
x = 18
Step-by-step explanation:
Plug in 4x-7 for b and 2x+3 for a in 3b = 5a
3(4x-7) = 5(2x +3)
Solve for x:
12x-21 = 10x+15
2x = 36
x=18