Question

Solve 5/x+y - 2/x-y =-1 and 15/x+y + 7/x-y 10 where x+y=0 and x-y is not equal to 0

Answer 1

5x-5y-2x-2y=-xsquare+ysquare equation(1)
3x-3y=-xsquare+ysquare
xsquare+3x-ysquare-3y=0
22x-8y=10xsquare-10ysquare equation(2)
10xsquare-22x-10ysquare+8y=0
subtracting equation 1and 2.we get

4x+19y=0