Question

швидко треба!!!!!!!!все на фото​

Answer 1

Ответ:

$\left \{ {{x+4y=-6} \atop {3x-y=8}} \right. \\x=-6-4y\\3(-6-4y)-y=8\\-18-12y-y=8\\-13y=26\\y=-2\\x=-6-4*(-2)=2\\\left \{ {{2+4*(-2)=-6} \atop {3*2-(-2)=8}} \right.$