|x-2|+√x-2y+z^2-2z+1=0,求3x-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
设X+Y+Z=0求X^3+X^2Z-XYZ+Y^2Z+Y^3的值
若x/2=y/3=z/4不等于0,求x+y+z/x+y-z的值
已知{x:y:z=1:2:3,x+y+z=12,求x、y、z的值
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.
|X-3|+| Y-2|+|Z-1|=0,求3x+2y +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
已知x+y-z=0,2x-y+2z=0 求(3x-2y+5z)/(5x-3y+2z)的值
已知x+4y+3z=3x-2y-5z=0,求x+2y-z/2x-3y+7z的值
已知4x-3y+z=0,x+2y-8z=0,xyz不等于0,求x+y-z/x-y+2z的值
解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值
已知实数x,y,z满足关系式2x-3y-z=0,x-2y+z=0,求x比y比z的值