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關注：1
2013-05-23 12:21
求翻譯：two number are in the ratio 2:3,when 4 is added to each number,the ratio changes to 5:7 the sum of the two original number is是什么意思？ 待解決
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two number are in the ratio 2:3,when 4 is added to each number,the ratio changes to 5:7 the sum of the two original number is
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