Question

SOCORRO ME AJUDEMMMHCDIJVFIFJF

x + 2y = 4
2x - y = 3​

Answer 1

Resposta:

Explicação passo a passo:

$\left \{ {{x + 2y = 4} \atop {2x-y=3}} \right. = \left \{ {{x= 4 - 2y} \atop {2x-y=3}} \right. \\2x - y = 3\\2(4 - 2y) - y = 3\\8-4y-y=3\\-5y=3-8\\-5y=-5 (-1)\\y=1\\\\x=4-2y\\x=4-2.1\\x=2$