解方程组2X+Y+Z=32,X+2Y+Z=19,X+Y+2Z=21,求X,Y,Z
解方程组2X+Y+Z=32,X+2Y+Z=19,X+Y+2Z=21,求X,Y,Z
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
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
x/2=y/3=z/4 x+y+z=18 求方程组解
已知x,y,z满足方程组{x+y-z=6,y+z-x=2,z+x-y=0,求x,
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3
解方程组:x-2y+z=-1,x+y+z=2,x+2y+3z=-1
解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3
已知x,y,z满足方程组x+2y-z=21 x-y+2z=12
解方程组2x+y-z=7 x+y+z =1 2x-y-z=5