已知想x,y,z满足2x+3y-z=0,且x-2y+z+0,那么x/z的值是已知x,y,z满足2x+3y-z=0,且x-2y+z=0,那么x/z的值是?

已知z、y、z同时满足x+3y-5z=0,2x-y-3z=0,求x:y:z 已知x、y、z满足方程组：x+y-z=6；y+z-x=2；z+x-y=0 求x、y、z的值 已知X.Y.Z满足方程组,X+y-Z=6y+z-x=2z+x-y=0求X.Y.Z的值 已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 已知x,y,z,同时满足方程x+3y-5z=0,2x-y-3z=0求x：y：z的值 已知实数x,y,z满足关系式2x-3y-z=0,x-2y+z=0,求x比y比z的值 已知实数 x y z 满足x+y-z=0 ,3x-y+2z=0 则x :y :z 已知有理数x、y、z满足条件|x-z-2|+(3x-6y-7)^2+|3y+3z-4|=0,求x、y、z 已知有理数x,y,z满足|x-z-2|+|3x-6y-7|+(3y+3z-40)^2=0,求x,y,z的值 已知想x,y,z满足2x+3y-z=0,且x-2y+z+0,那么x/z的值是已知x,y,z满足2x+3y-z=0,且x-2y+z=0,那么x/z的值是? 已知x,y,z满足方程组｛x+y-z=6{y+z-x=2{z+x_y=0,求x,y,z的值 已知x,y,z满足方程组：4x-5y+2z=o;x+4y-3x=0,求x:y:z的值 已知x,y,z,满足方程组x-2y+z=0,7x+4y-5z=0 已知x,y,z满足方程组x-2y+z=0 7x+4y-5z=0,且z不等于0,2x²-3y²+z²/y²-2z²的值为? 已知实数x,y,z满足x+y+z=1,x^2+y^2+z^2=1/2求X,Y,Z∈{0,2/3},已知实数x,y,z满足x+y+z=1,x^2+y^2+z^2=1/2求证X,Y,Z∈{0,2/3}, 已知有理数x,y,z满足 (x-1)(x-1)+|2x-y|+|x-3z|=0 求x+y+z的值,要过程! 已知有理数x,y,z满足 (x-1)(x-1)+|2x-y|+|x-3z|=0 求x+y+z的值