已知x+y除以5=y+z除以6=z+x除以7,且xyz≠0,求x比y比z
已知x+y除以5=y+z除以6=z+x除以7,且xyz≠0,求x比y比z
若x+y除以3=y+z除以5=z+x除以4,且xyz≠0,则x:y:z=?
已知x除以2=y除以3=z除以4,且x≠0,求x+y+z除以x-2y+3z的值,
已知:(x+y-z)/z=(x-y+z)/y+(y+z-x)/x,且xyz≠0,求代数式[(x+y)(y+z)(x+z)
已知x+y-z/z=x-y+z/y=-x+y+z/x,且xyz不等于0,求分式[(x+y)(x+z)(y+z)]/xyz
已知xyz满足|3x-2y+z|+|2x+y+2z|=0(xyz不等于o)求x+y除以z
已知xy/5=y+z/6=z+x/7,且xyz不等于0,求x:y:z
xyz不等于0,x+y除以z=x+z除以y=y+x除以x=k,求k值
已知4x-3y-6z=0,x+2y-7z=0,xyz≠0,求2x²+3y²+6z²除以x&
已知x+2y-3z=0,2x+3y+5z=0,求(x+y+z)除以(x-y+z)
已知2x+3y-4z=0,3x+4y+5z=0,求x+y+z/(除以)x-y+z的值.
已知2x+3y-4z=0,3x+4y-5z=0.求x+y+z除以x-y+z,