|3X-2Y|+√Y-2Z＝0求X/Y+Y/Z+Z/X的值

|3X-2Y|+√Y-2Z＝0求X/Y+Y/Z+Z/X的值 如果|x+y+z-6|+|2x+3y-z-12|+|2x-y-z|=0求x,y, 若x+2y-4z＝0 3x+y-z＝0 求x：y：z 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. 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 x=y/z=z/3,x+y+z ＝12,求2x+3y+4z是多少, 若|x+3|+|y-2|+|2×z+1|=0求(x×z-y×z)(y-x+z)的值 x+2y=3x+2z=4y+z 求x:y:z 已知x,y,z∈（0,+∞）求证：√x^+xy+y^+√y^+yz+z^+√z^+zx+x^＞＝3/2(x+y+z ) 2|X-Y|+√2Y+Z+Z²-Z+1/4=0求X+Y+Z的值 分式加减的几道题目求速度1 .(x+y)²/（x-z)(y-z) - (y+z)²/（x-z)(y-z) = 2.2x+3y/x-y+2y/y-x-3y/x-y= |x-2|+√x-2y+z^2-2z+1=0,求3x-y+z的值 已知：x+y+z＝3y＝2z,求x分之x+y+z的值 x-2y-3z=0 2x+y-2z=0 求X：Y：Z的值 已知 3x-y+2z=0 2x+y-3z=0,求x :y :z. 已知（1）X-Y+Z=0 (2)X+2Y-3Z=0 求X:Y:Z 设X+Y+Z=0求X^3+X^2Z-XYZ+Y^2Z+Y^3的值