Question

método da comparação
2x+y=2
2x-y=6

Answer 1

y = 2-2x

2x-y=6
2x-(2-2x)=6
2x-2+2x=6
2x+2x=6+2
4x=8
x= 8/4
x = 2

y = 2-2x
y=2-2(2)
y= 2-4
y= -2

(2,-2)