数学题用2元1次解已知道4X-3Y-6Z=0 X+2Y-7Z=0且XYZ都不等于0,求X+2Y+3Z分之3X+2Y+Z的
数学题用2元1次解已知道4X-3Y-6Z=0 X+2Y-7Z=0且XYZ都不等于0,求X+2Y+3Z分之3X+2Y+Z的
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
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xyz不等于0,且x+2y-z=0,7x-y-z=0,求x+y+z/2x-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x+2y-7z=0,4x-3y-6z=0,求x+2y+z/x-2y-z的值?
已知2x-3y+z=0,3x-2y-6z=0,且xyz不等于0,求2x^+y^-z^分之x^+y^+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
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x/2=y/3=z/4且xyz不等于0,求2x+3y-z/x-3y+z拜托各位了 3Q
若xyz不等于0,且{4x-5y+2z=0,x+4y-3z=0,求x:y:z