these are 2 controversial explinations
you have 37x = 12
that isn't an exponential equation (something like x^n would be required)
here is my solution:
"In order to isolate x, Mike needs to divide both sides by 37 to get x = 12/37"
if you forgot to copy the whole equation respond to this with the entire equation, I think you are missing some part of it
edit: - I relized that you meant 37^x and not 37x - CPhill solved this problem already https://web2.0calc.com/questions/exponential-equations_3