Question

me ajudemm, por favor​

Answer 1

Resposta:

Explicação passo-a-passo:

$\left \{ {{x+3y=5} \atop {2x-y=-4}} (.3)\right. \\\\\left \{ {{x+3y=5} \atop {6x-3y=-12}}\right. +\\\\7x = -7\\x = -\frac{7}{7} \\x= -1\\\\-1 + 3y = 5\\3y = 6\\y = 2$