{3x+2y=6,5x-2y=64(用加减消元法做)
x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组
5x-3y=2,4y+2x=6用加减消元法
2x-y-2=0 4x-3y-8=0 用加减消元法做
用加减消元法解方程组{3x+2y=5 2x-3y=8
解方程组{3x+2y=8 5x-4y=6 加减消元法.
用加减消元法解方程组{4x-5y=5,2x+3y=-25
4x+3y=6 2x-y=4用加减消元发.
用加减消元法解方程组 3(x-1)=y+5 2(y+1)=x+1
{x-y=3 2x+3(x-y)=11 用加减消元法解方程组
解方程组2x-3y=8/7x-5y=-5,用加减消元法做
用加减消元法解下列方程组:2x+y=15 x+2y=18 5x+y=3 x+5y=2
用加减消元法解二元一次方程组:①[(x+y)/2]+[(x-y)/3]=5②[(x+y)/2]+[(x-y)/3]=-1