Question

{3x-2y=10
{5x+2y=22   
A resposta tem que dar x=4 e y=1

Answer 1

$\left \{ {{3.4-2.1=10} \atop {5.4+2.1=22}} \right.$
$\left \{ {{12-2=10} \atop {20+2=22}} \right.$
$\left \{ {{10=10} \atop {22=22}} \right.$