利用加减消元法解方程组2x-3y=3,5x-9y-6=0
x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组
3x+2y=9 3x-2y=3 用加减消元法解方程组
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{3x+2y=5 2x-3y=8
加减消元法解方程组:4x-y=9,3x+5y=1
用加减消元法解方程组3x+4y=14,5x-6y=36
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{4x-5y=5,2x+3y=-25
用加减消元法解方程组 3(x-1)=y+5 2(y+1)=x+1
解方程组{3x+2y=8 5x-4y=6 加减消元法.
{x-y=3 2x+3(x-y)=11 用加减消元法解方程组
{x+y/2+x-y/3=6 4(x+y)-3(x-y)=0 用加减消元法解方程组