Question

Срочно!!! пожалуйста.

Answer 1

$left { {x=5y} atop {2x-7y=6}} right. left { {x=5y} atop {2*5y-7y=6}} right. left { {x=5y} atop {3y=6}} right. left { {x=5*2} atop {y=2}} right. left { {x=10} atop {y=2}} right.$
Ответ: (2;10)
$left { {y=2-3x} atop {5x+4y=-6}} right. left { {{y=2-3x} atop {5x+4*(2-3x)=-6}} right. left { {y=2-3x} atop {5x-12x=-14}} right. left { {y=2-3x} atop {-7x=-14}} right. left { {y=2-3*2} atop {x=2}} right. left { {y=-4} atop {x=2}} right.$
Ответ: (2;-4)