Question

{-2x-7y=-22 {4x-6y=4 (Решите пж) Это все 1

Answer 1

$\left \{ {{-2x-7y=-22} \atop {4x-6y=4}} \right. \\ \left \{ {{-2x-7y=-22} \atop {2x-3y=2}} \right. \\ -7y-3y=-22+2 \\ -10y=-20 \\ y=2 \\ \left \{ {{y=2} \atop {2x-3y=2}} \right. \\ \left \{ {{y=2} \atop {2x-6=2}} \right. \\ \left \{ {{y=2} \atop {2x=8}} \right. \\ \left \{ {{y=2} \atop {x=4}} \right.$