Question

Find X when X - Y = 3 and X2 + Y2 = 89 where X and Y are integers.

Answer 1

-8 and 5 are the right answer

Answer 2

X-Y=3 @1

multiplying 2 on both sides in @1

that gives

2(X-Y)=2*3

2X-2Y=6 @2

2X+2Y=89 @3

@2+@3=

4X=95

X=95/4

and Y=83/4

thank you