Question

alguem me ajuda por favor

Answer 1

Resolvendo:

$x-2y=6\implies x=2y+6\\2x+2y=-8\implies 2(2y+6)+2y=-8\implies 4y+12+2y=-8\implies 6y=4\implies y=\dfrac{4}{6}=\dfrac{2}{3}\\x-2\cdot\dfrac{2}{3}=6\implies x=\dfrac{22}{3}$