3x+y=-2 -5x-2y=6 решение

[latex] \left \{ {{y=-2-3x} \atop {-5x-2(-2-3x)=6}} \right. \left \{ {{y=-2-3x} \atop {-5x+4+6x=6}} \right. \left \{ {{y=-2-3x} \atop {x=2}} \right. \left \{ {{y=-8} \atop {x=2}} \right. [/latex]