Question

Solve the system of equations.in this form: (x, y) -5y + 8x = -18 5y + 2x = 58

Answer 1

the answers are x=4 and y=10

Answer 2

If we add the equations it looks like
-5y + 8x + 5y + 2x = -18+58
so 10x=40
so x=40/10=4
now let's replace x by 4 in the second equation
5y +2*4=58
5y=58-2*4=58-8=50
so y=50/5=10
so (x, y) = (2, 10)