x/2=y/3=z/(1/2),则(x+3y-z)/(2x-y+z)的值是多少
已知x=y/3=z/5.且x+y-2z不等于0.求2x+3y-z/x+y-2z的值是多少
x=y/z=z/3,x+y+z =12,求2x+3y+4z是多少,
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
x/2=y/3=z/(1/2),则(x+3y-z)/(2x-y+z)的值是多少
已知{x:y:z=1:2:3,x+y+z=12,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.
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
x=2,y=-3,z=3则表达式x||y+z&&y-z的值为
x/2=y/3=z/5 x+3y-z/x-3y+z
已知2x=3y=4z求2x-y+z分之x+y+z的值
设X+Y+Z=0求X^3+X^2Z-XYZ+Y^2Z+Y^3的值