Question

СРОЧНО!(скрин внутри)

Answer 1

2х+2у-х+6=0
3х-х+у=0

Х+2у=-6
2х+у=0

Х=-6-2у
2(-6-2у)+у=0

Х=-6-2у
-12-4у+у=0

Х=-6-2у
-3у=12

Х=-6-2у
У=-4

Х=2
У=-4

Answer 2

$2(x + y) - x + 6 = 0 \\ 3x - (x - y) = 0 \\ \\ 2x + 2y - x + 6 = 0 \\ 3x - x + y = 0 \\ \\ x + 2y + 6 = 0 \\ 2x + y = 0 \\ \\ x = - 2y - 6 \\ 2x + y = 0 \\ \\ 2( - 2y - 6) + y = 0 \\ - 4y - 12 + y = 0 \\ - 3y = 12 \\ y = - 4 \\ \\ x = - 2 \times ( - 4) - 6 \\ x = 2$

Ответ: (х,у) = (2;-4)