Solve x+y=2x+y=2x+y=2 and x−y=2x-y=2x−y=2.
x=2,y=0x=2, y=0x=2,y=0
x=0,y=2x=0, y=2x=0,y=2
x=1,y=1x=1, y=1x=1,y=1
x=2,y=2x=2, y=2x=2,y=2