Question

Escalone e resolva o sistema

D) {x + y=-4
{3x - 2y = 3

Answer 1

$\left \{ {{x+y=-4} \atop {3x - 2y = 3}} \right. \\\\ x = -4 - y\\\\ 3 * (-4-y) - 2y = 3\\ -12 - 3y - 2y = 3\\ -y = 3 -12\\ y= 9\\\\ x = -4 -(9)\\ x = -13\\\\ x= -13\\ y= 9$