Question

Can u help me? Well will u help me?

Answer 1

Hello from MrBillDoesMath

Answer: 12

Discussion

Let the number of aerobic classes be "n".

Then

"membership" "aerobic" class

12 + 3n = 4n

Subtract 3n from each side:

12 + (3n - 3n) = 4n - 3n =n =>

12 = n

Thank you,

Mr. B