Решите систему уравнений |5x+6y=-20 |9y+2x=25

[latex] \left \{ {{5x+6y=-20} \atop {2x+9y=25}} \right. \left \{ {{10x+12y=-40} \atop {-10x-45y=-125}} \right. \left \{ {{-33y=-165} \atop {2x+9y=25}} \right. \left \{ {{y=5} \atop {2x+45=25}} \right. \left \{ {{y=5} \atop {2x=25-45}} \right. \left \{ {{y=5} \atop {x=-10}} \right. [/latex] Ответ:[latex](-10;5)[/latex]