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51问答网 > 甲乙两箱粉笔的合数之比是五比一。如果从甲箱里取出12盒后放入乙箱后

甲乙两箱粉笔的合数之比是五比一。如果从甲箱里取出12盒后放入乙箱后

2025-03-15 09:19:37

推荐回答（2个）

回答1：

设乙箱粉笔有x盒，根据题意可得
5x-12：x+12=7：5
解
5（5x-12）=7（x+12）
25x-60=7x+84
25x-7x=84+60
18x=144
x=144/18
解得x=8
乙箱有8盒粉笔，甲箱有5×8=40盒。两箱粉笔共8+40=48盒。

回答2：

答案

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