Question

please help
need it urgently ......​

Answer 1

If x+y=3,

When x=3,

3+y=3

y=3-3

y=0.

(x,y)=(3,0)

when y=5,

x+5=3

x=3-5

x=-2.

(x,y)=(-2,5)

when y=3,

x+3=3

x=3-3

x=0.

(x,y)=(0,3)