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数学
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二又三分之一分之九又九分之一化简后是多少
人气:307 ℃ 时间:2020-04-27 05:40:34
解答
(9+1/9)/(2+1/3)
=(82/9)/(7/3)
=82/9*3/7
=82/3*1/7
=82/21
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