若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
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若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
x:y:z=3:4:6
设x=3a,y=4a,z=6a;其中a≠0
原式=(3a+4a-6a)/(3a-4a+6a)=a/5a=1/5
若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
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若x:y:z=3:4:5=6,求x-y+z分之x+y-z的值
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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.
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x/6=y/4=z/3,则(x+3y)/(3y-2z)
若x/2=y/3=z/4,则x+y+z/x=多少?