Question

10x +2y = 12
-5x + 4y=-6​

Answer 1

$\left \{ {{10x+2y=12} \atop {-5x+4y=-6|*2}} \right. \Longrightarrow \left \{ {{10x+2y=12} \atop {-10x+8y=-12}} \right.$

$+\left \{ {{10x+2y=12} \atop {-10x+8y=-12}} \right. \\---------\\10y=0\\y=0\\\\10x+2*0=12\\10x=12\\x=1,2$

Ответ: (1,2; 0)