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1/3-1/6-1/12-1/24-1/48=?的简便方法
人气:451 ℃ 时间:2020-04-06 20:58:08
解答
1/3-1/6-1/12-1/24-1/48
=16/48-8/48-4/48-2/48-1/48
=(16-8-4-2-1)/48
=1/48
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