若X/2=Y/3=Z/_5,求2X+Y+3Z/2X的值.

若X/2=Y/3=Z/_5,求2X+Y+3Z/2X的值. 已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z 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=3：4：5,(1)求x+y分之z的值；（2）若x+y+z=6,求x,y,z. 若x/3=y/4=z/5,求x+y+z/3x-2y+z的值. 若x:y:z=2:3:4,求x+y+z/x-2y+3z的值 若x/2=y/3=z/4不等于0,求x+y+z/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 如果|x+y+z-6|+|2x+3y-z-12|+|2x-y-z|=0求x,y, 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 若x+y+z=3y=2z,则x/x+y+z=? 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= 若2分之x+y=3分之y+z=5分之x+z 且x+y+z=18 求x,y,z的值 若X：Y：Z=2：3：4求X+Y+Z/X-2Y+3X的值 设|x|-|y|+|z|=|x+y+z|,且|x+y|=4,|y+z|=5,|y|=3,求(x-y-z)^2的值