Solving a system of Equations for Two Variables

[Dirty.Rotten.Imbecile]

Hi, I'm stuck on this one. Heres what I have up to Solving the first Variable. Can anyone see what I did wrong?

 

[mmm4444bot]

Can anyone see what I did wrong?

I didn't check everything, but the term -30/2 is not correct because the negative is being subtracted. :cool:

 

[Dirty.Rotten.Imbecile]

OK! Great! That fixed everything!