Question

Find 4 solution of - (x+y=4)​

Answer 1

we know that

4 equal to 2+2 ,so the x=2,y

means x+y=4=2+2=4

Answer 2

-(x +y = 4 )

-x-y=-4

x+y=4

x=1 then y=3

x=2 then y=2

x=3 then y=1

x=4 then y=0