用加减消元法解方程组{6X-3Y=-5{4X-9Y+1=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
用加减消元法解方程组 4x+3y=3 3x+5y=-6
6x-4y=37 3x+4y=-5 用加减消元法解方程组
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
用加减消元法解方程组 6x-4y=37,3x+4y=-4
用加减消元法解方程组{4x-5y=5,2x+3y=-25
{x/3+y/4=1 x/3-y/2=1 用加减消元法解方程组
用加减消元法解方程组 3(x-1)=y+5 2(y+1)=x+1
加减消元法解方程组:{3x-7y=1 {5x-4y=17
{x+y/2+x-y/3=6 4(x+y)-3(x-y)=0 用加减消元法解方程组
用加减消元法解二元一次方程组方程组4x+3y=6和2x-y=4