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数学
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简便计算 (90+88分之1)×89分之1
人气:439 ℃ 时间:2019-10-27 09:26:21
解答
(90+1/88)×1/89
=(89+1+1/88)x1/89
=(89+89/88)x1/89
=89x1/89+89/88x1/89
=1+1/88
=1 又 1/88
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