Đáp án+Giải thích các bước giải:

d,$\left \{ {{2(x-2y)-3(2x-y)=5} \atop {3(x+2y)+2(4x-3y)=6}} \right.$ 

$\left \{ {{2x-4y-6x+3y=5} \atop {3x+6y+8x-6y=6}} \right.$ 

$\left \{ {{-4x-y=5} \atop {11x=6}} \right.$ 

$\left \{ {{-4x-y=5 } \atop {x=6/11}} \right.$ 

$\left \{ {{-24/11-y=5} \atop {x=6/11}} \right.$

$\left \{ {{y=-79/11} \atop {x=6/11}} \right.$