what do the following two equations represent

Question

5x-5y=-3

25x+25y=-2

Answer 1

-5 * eq1 + eq2:

50y = 13

y = 13/50

but the first equation is really 5(x-y) = -3

x - y = -3/5

x - 13/50 = -3/5

x - 13/50 = -30/50

x = -17/50

the solution is x = -17/50 = -0.34 and y = 0.26