Question

реши пожалуйста задание 3:)

Answer 1

$left { {{6x-2y-5=2x-3y} atop {5-x+2y=4y+16}} right.$

$left { {{4x+y=5} atop {x+2y=-11}} right.$

$left { {{y=5-4x} atop {x+2(5-4x)=-11}} right.$

$left { {{y=5-4x} atop {x+10-8x=-11}} right.$

$left { {{y=5-4x} atop {-7x=-21}} right.$

$left { {{x=3} atop {y=5-4*3=-7}} right.$