Hello MHF,

In this problem, it asks to "solve the system by the method of substitution."

and it gives me the following two equations:

{-7/2x - y = -18

{8x^2 - 2y^3 = 0

I pretty much know what I have to do, but there are a few things stopping me from completing the problem...I will try to demonstrate what I mean with an attached picture.