Question

how do you solve 3x-5y=10 a+b=c

Answer 1

Poorly written question.

Answer 2

c'mon check your question buddy...

Answer 3

To extend on what other people have written, the question as asked is impossible; the problem is as solved as it's going to get.

Is the question asking you to alter this equation to another form, such as the point-slope form or slope-intercept form? Alternatively, is it giving you either x or y, and asking you to find the other one? Or is it just asking you to graph the equation you gave us?