Solve each of the following systems of equations by the method 5/(x+y) -2/(x-y) = -1 ;15/(x+y) +7/(x-y) =10 where x ≠ 0 and y ≠ 0

Question

 Solve each of the following systems of equations by the method of cross-multiplication:

5/(x+y) -2/(x-y) = -1

15/(x+y) +7/(x-y) =10 where x ≠ 0 and y ≠ 0

Answer 1

Then, the given system of equations becomes