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(8/9-1/3)/(7/18*2/3)简算
人气:104 ℃ 时间:2020-03-22 04:53:10
解答
(8/9-1/3)/(7/18*2/3)
=5/9/(7/27)
=5/9*27/7
=15/7
=2又1/7
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