Question

помогите пжпжпжпжпж!!!!!!!!!​

Answer 1

$\left \{ {{3x+y=1}\atop {2x-3y=8} }\\\left \{ {{9x+3y=3}\atop {2x-3y=8}}\\\\\\11x=11\\x=1\\y=1-3x\\y=1-3=x-2$

11x=11

x=1

y=1-3x

y=1-3=-2

Ответ(1:-2)

$\left \{ {{2x-y=5} \atop {3x+4y=2}} \right. \\\left \{ {8x-4y=20} \atop {3x+4y=2}} \right.\\11x=22\\x=2\\y=2x-5\\y=4-5=-1$

Ответ(2:-1)

$\left \{ {{x-y=4} \atop {3x-2y=11}} \right. \\\left \{ {{-2x+2y=-8} \atop {3x-2y=11}} \right.\\x=3\\y=x-4\\y=3-4=-1$

Ответ (3:-1)