Question

Решите систему
1) x+4y=-2
6x-y=13

Answer 1

$left { {{x+4y=-2} atop {6x-y=13}} right. ; left { {{x+4(6x-13)=-2} atop {y=6x-13}} right. \ x+24x-52=-2 \ 25x=50 \ x=2 \ y=6*2-13=12-13=-1$