若(x+y)除以z=(y+z)除以x=(x+z)除以y=k,求k
若(x+y)除以y=(y+z)除以x=(z+x)除以y=k,求k的值
xyz不等于0,x+y除以z=x+z除以y=y+x除以x=k,求k值
若x除以10=y除以8=z除以9,则x+y+z除以y+z
已知2x+3y-4z=0,3x+4y+5z=0,求x+y+z/(除以)x-y+z的值.
(x+y)除以2=(y+z)除以3=(z+y)除以4,x+y+z=27这个方程怎么解啊.
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满足3x-2y+z的绝对值+2x+y+2z的绝对值=0(x,y,z不等于0),求x+y除以Z的值
已知xyz满足|3x-2y+z|+|2x+y+2z|=0(xyz不等于o)求x+y除以z
X除以A-B=Y除以B-C=Z除以C-A,求x+y+z的值
已知(Y+Z)除以X等于(X+Z)除以Y等于(X+Y)除以Z,求(X-Y-Z)除以(X+Y+Z)
x除以2=y除以3=z除以5 2x+y+3z=88 求x = y = 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