Question

Valor de x e y no sistema linear 2y+x=1
x + 3y= 13

Answer 1

$\left \{ {{2y+x=1} \atop {x+3y=13}} \right.\\\\x=1-2y\\\\x+3y=13\\1-2y+3y=13\\1+y=13\\y=12\\\\x=1-2y\\x=1-2(12)\\x=1-24\\x=-23$