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5/6+13/42+15/56,用简便运算
人气:254 ℃ 时间:2019-12-20 02:34:03
解答
5/6+13/42+15/56,
=(35+13)/42+15/56
=48/42+15/56
=8/7+15/56
=(64+15)/56
=79/56
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