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Yahoo!奇摩知識+ - 分類問答 - 教育學習 - 已解決
Yahoo!奇摩知識+ - 分類問答 - 教育學習 - 已解決 
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有關小六數學題目(簡化問題)
Apr 25th 2014, 14:57

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260x+340y=2140 26x+34y=214 13x+17y=107 然後套數字 學生票3張 成人票4張 x=學生票張數 y=大人票張數...

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