解方程组 3x-2y+z=3 2x+y-z=3 4x+3y+2z=-3

解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6} 解方程组x-4y+z=-3,2x+y-z=18,x-y-z=7. x+y/2=z+x/3+y=z/4,...x+y+z=27.解方程组. 解方程组：x+y+z=4,x+y+2z=5,3x+y-z=6 解三元一次方程组：x+y+z=6,y-z=4,x-y-2z=3, 解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3 解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3 解方程组:x+2y+3z=80,x/2+y/3=z/4, 解方程组x+2y+3z=根号(x+2y+3z+2)+4 解方程组{2x+3y+z=11,x+y+z=0,3x-y+z=-2. 解方程组：{x/2=y/3=z/4 2x+y+z=22 解方程组：x-2y+z=-1,x+y+z=2,x+2y+3z=-1