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有黑白棋子一堆,其中黑子个数是白子个数的两倍。如果从这堆棋子中每次同时取出黑子4个,白子3个,那么
有黑白棋子一堆,其中黑子个数是白子个数的两倍。如果从这堆棋子中每次同时取出黑子4个,白子3个,那么
2024-12-02 15:07:09
推荐回答(2个)
回答1:
3×2=6枚
6-4=2枚
(18-1×2)=16枚
16÷2=8次
答需要取8次
回答2:
设白子原来有x个,取了y次
x-3y=1 (1)
2x-4y=18 (2)
(2)-(1)X2
2y=16
y=8次
x=25个
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