I'm supposed write a function, solve, which solves any linear equation of the form ax + b == cx + d
There's a build in command to solve, but we have to print each step. So subtract b, subtract cx, divide by a/c.

Does anyone know how to go about this in Mathematica?

Actually, if someone could try to explain how to do it in any language, it would probably help xD

I feel like it would be really easy to do if the input was a, b, c, d, but the only input is the entire equation.
I was thinking of somehow using the FullForm, and pulling each integer out and assigning them to variables and solving the easy way, but I don't know how to go about that either =/