已知X+4Y+Z=24,2X+7Y+2Z=41,则x:y:z=

已知x+4y+z=24,2x+7y=2z=41,求x+y+z 已知X+4Y+Z=24,2X+7Y+2Z=41,则x:y:z= 已知2x+5y+4z=6 3x+y-7z=-4求x+y-z 已知4X=7Y+5Z,2X+Y=Z,那么X:Y:Z的值是? 已知4X=7y+5z,2x+y=z,那么x:y:z的值是? 已知x,y,z,满足方程组x-2y+z=0,7x+4y-5z=0 已知：x^2/(z+y)+y^2/(x+z)+z^2/(x+y)=0,求x/(z+y)+y/(x+z)+z/(x+y)的值. 已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z 已知x+4y+3z=3x-2y-5z=0,求x+2y-z/2x-3y+7z的值 已知4x-3y-6z=0,x+2y-7z=0,求5x+2y-z/2x-3y-10z 已知x,y,z满足2x-y+4z=8,x-2y-z=7,求x-y+z的值.要2种方法 已知X、Y、Z满足2X-Y+4Z=8(1);X-2Y-Z=7(2)求X-Y-Z的值 已知关于x y z的方程组2x-3y+5z=7 x+2y-3z=8,则4x+y-z= 已知:X、Y、Z满足2X-Y+4Z=8,X-2Y-Z=7,求X-Y+Z的值 已知：4x-3y-6z=0,x+2y-7z=0.求出x-y+z÷x+y+z=? 已知4x-3y-6z=0,x+2y-7z=0,则x-y+z/x+y+z=_________ 已知4x-3y+6z=0 x+2y-7z=0 则x-y+z/x+y-z=? 已知,方程组:4x-3y-7z=0 x+2y=10z 则(x-y+z)÷(x+y+z)=——