Question

Gente socorro pelo amor de Deus
X+y=6
X-y=2

Answer 1

$\left \{ {{x+y=6} \atop {x-y=2}} \right.$

Resolvendo pelo método da soma:

$(x+y)+(x-y)=6+2$

$x+y+x-y=8$

$2x=8$

$x=\frac{8}{2}$

$\boxed {x=4}$

$x+y=6$

$4+y=6$

$y=6-4$

$\boxed{y=2}$