[解題] 國中數學(急)
甲 乙 丙三個箱子
各放了一些球
加起來共240個球
設甲X乙Y顆
步驟1:
先從甲箱內取出與乙箱原先相等的球數
再從甲箱取出與丙箱原球數相等的球
步驟二:
再從乙箱內取出與甲箱相等的球數
再從乙箱取出與丙箱球數相等的球
步驟三:
再從丙箱內取出與甲箱相等的球數
再從甲箱取出與乙箱相等的球
問甲乙丙原來各有幾顆?
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