1.方程组4x-3y-3z=0且x-3y+z=0(xyz不等于0) 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
方程组:x-2y+4z=0,2x+3y-3z=0...xyz不等于0,求(2x+y-z)\(2x-y+z)
已知方程组4x-3y-3z=0 x+3y+z=0(xyz不等于0),求x/y y/z的值
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
已知方程组2x-3y+z=0 3x-2y-6z=0 且xyz不等于0求 x:y:z
已知方程组x-3y-2z=0,2x-y+z=0,且xyz不等于0,求x:y:z.
已知方程组{4x-3y-3z=0,x+3y+z=0}(xyz不等于0),求x:y与y:x的值
已知方程组4x-y+3z=0,2x+y+6z=0.且xyz不等于0,则x:y:z=
若xyz不等于0,且满足(y+z)/x=(x+z)/y=(x+y)/z,求(y+z)(x+z)(x+y)/xyz的值
若xyz不等于0,且(y+z)/x=(z+x)/y=(x+y)/z,求(y+z)(z+x)(x+y)/xyz的值?
若1/2x=1/3y=1/4z且xyz不等于0,求x:y:z
已知4x-3y+z=0,x+2y-8z=0,xyz不等于0,求x+y-z/x-y+2z的值