crappiefisher26 said:

I'm stuck on this one.

Salaries. Rafael earns $35 more per week then Andrew. If their weekly salaries total $715, what amount does each earn.

Here is how I set it up:

x - 35 = 715

... but it's wrong. I don't want the answer, but I would appreciate advice on what I did wrong in setting it up. Thank you!

You need to specify what x represents!!

Suppose x represents Rafael's salary.

Now, we also need Andrew's salary, don't we? He earns $35 less per week than Rafael. If Rafael's salary is x, then Andrew's salary is x - 35

x = Rafael's salary

x - 35 = Andrew's salary

Now, we know this: together, they earn $715 each week. So,

Rafael's salary + Andrew's salary = 715

x + (x - 35) = 715

Ok...can you solve it now?

If you have difficulty solving this equation, you definitely need to talk to your teacher about getting some extra help.