Реши пожалуйста задание 3:)

[latex] \left \{ {{6x-2y-5=2x-3y} \atop {5-x+2y=4y+16}} \right. [/latex] [latex] \left \{ {{4x+y=5} \atop {x+2y=-11}} \right. [/latex] [latex] \left \{ {{y=5-4x} \atop {x+2(5-4x)=-11}} \right. [/latex] [latex] \left \{ {{y=5-4x} \atop {x+10-8x=-11}} \right. [/latex] [latex] \left \{ {{y=5-4x} \atop {-7x=-21}} \right. [/latex] [latex] \left \{ {{x=3} \atop {y=5-4*3=-7}} \right. [/latex]