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回复:你的思路很好,但题目这是针对最后一种情况,而且应该只有一个确定的答案

guest007 2010-02-12 09:42:22 ( reads)

I did not get it- you have to explain to me why other two answers are not good -
3x:5x:8x
1x:3x:4x

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