解方程组:{2x+y+z=2 x+2y+z=4 x+y+2z=6
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
已知x、y、z满足方程组:x+y-z=6;y+z-x=2;z+x-y=0 求x、y、z的值
解三元一次方程组:x+y+z=6,y-z=4,x-y-2z=3,
解方程组{6x=4y=3z,2x+y+z=22
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.
已知x,y,z满足方程组{x+y-z=6{y+z-x=2{z+x_y=0,求x,y,z的值
解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值
已知方程组4x-y+3z=0 2x+y+6z=0且xyz不等于0,则x/y+y/z+z/x是多少
4x-3y-6z=0,x+2y-7z=0是一个方程组,那么x-y+z/x+y+z的值等于
三元一次方程组!急已知x,y,z满足方程组x+y-z=6y+z-x=2z+x-y=0