若(4x-3y-3z)^2+|x-3y-z|=0 且xyz不等于0 则4x+y-z/x+y+z 的值
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
已知4x-3y+z=0,x+2y-8z=0,xyz不等于0,求x+y-z/x-y+2z的值
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?
已知:(x+y)/z=(x+z)/y=(z+y)/x,且xyz不等于0,则分式(x+y)(x+z)(z+x)/xyz的值
若xy-z不等于0,且(y+x)/x=(z+x)/y=(y+x)/z,求[(y+z)(z+x)(x+y)]/xyz的值?
若xyz不等于0,且x+2y-7z=0,4x-3y-6z=0,求x+2y+z/x-2y-z的值?
已知x/2=y/3=z/4,且x+y+z不等于0,求2x+3y-4z/x+y+z的值
若1/2x=1/3y=1/4z且xyz不等于0,求x:y:z
若xyz不等于0,且{4x-5y+2z=0,x+4y-3z=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:z=
若3分之x+y=5分之y+z=4分之z+x,且xyz不等于0,则x:y:z=