x/3+y/2=1/6------(1)y/3-x/4=-5/6-----(2)(1)*6:2x+3y=1--------(3)(2)*12:4y-3x=-10 3x-4y=10-----(4)(3)*3-(4)*2=-176x+9y-(6x-8y)=-1717y=-17y=-1代入(3)2x-3=1x=2