如果x/2=y/3=z/4,求(2x-y+3z)/(x+y-z)的值

如果x+4/3=y+z/2=z+8/4,且x+y+z=12,求x,y,z的值. x/3=y/4=z/5,求x+y+z/3x-2y+z的值, 若x/3=y/4=z/5,求x+y+z/3x-2y+z的值. 已知2x=3y=4z求2x-y+z分之x+y+z的值 若x:y:z=2:3:4,求x+y+z/x-2y+3z的值 x：y：z=2：3：4 求 3x+2y-z/x+y+z 的值 已知x:y:z=2:3:4,且x-y+z=36,求x+y+z的值. 已知x/4=y/5=z/6 求x+y+z/3x-2y+z的值 已知x/4=y/5=z/6,求x+y+z/3x-2y+z的值. 已知x:y:z=2:3:4,且x+y+z=18,求x,y,z的值 若x/2=y/3=z/4不等于0,求x+y+z/x+y-z的值 已知x:y:z=2:3:4求x-y+z分之x+y-z的值