Question

2x+y=1
(5x + 2y = 0 as solsoluções do sistema ​

Answer 1

Resposta:

$x=-2$

$y=5$

Explicação passo-a-passo:

$\left \{ {{2x+y=1} \atop {5x+2y=0}} \right. \\\\2x+y=1\\y=1-2x\\\\5x+2y=0\\5x+2(1-2x)=0\\5x+2-4x=0\\x=-2\\\\2x+y=1\\2(-2)+y=1\\-4+y=1\\y=5$