已知x:y=0.5:1/3,y:z=6/5:3/5,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.
已知3X=4X,5Y=6Z求X+Y:Y+Z
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2x+5y+4z=6 3x+y-7z=-4求x+y-z
已知3x=4Y,5Y=6Z,求 (1)x:y:z;(2)x+y/y+z.
已知3x=4Y,5Y=6Z,求 (1)x:y:z;(2)x+y/y+z
已知x:y:z=4:5:7,求:(1)2x+3y+z/5z; (2)x+y/y+z.
已知5x=3y,4z=7y,求x:y:z
已知3x=4y,2y=5z,试求x:y:z
已知1/3x=1/4y=1/5z,求x:y:z
已知5x+3y=3z,-x-3y+z=0,求x:y:z