用加减消元法解方程:{3x-3y=-6,3x+2y=4;
x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组
用加减消元解方程 2x+3y=12 3x+4y=17
用加减消元法解方程组 4x+3y=3 3x+5y=-6
用加减消元法解方程组{x/3+y/4=2 x/4+y/3=2
用加减消元法解方程组 6x-4y=37,3x+4y=-4
{x/3+y/4=1 x/3-y/2=1 用加减消元法解方程组
6x-4y=37 3x+4y=-5 用加减消元法解方程组
用加减消元法解方程组3x+4y=14,5x-6y=36
2x=-3y=4x-2-y+10,用加减消元法解方程组
用加减消元法解方程组{2X+3Y=8.7{4X+2Y=12.2
用加减消元法解方程组{4x-5y=5,2x+3y=-25
{x+y/2+x-y/3=6 4(x+y)-3(x-y)=0 用加减消元法解方程组