40下
45*(1-1/9)=40
小红和小明拍球,小红拍45下,小明比小红少1/9,小明拍多少下?
小红和小明拍球,小红拍45下,小明比小红少1/9,小明拍多少下?
数学人气：845 ℃时间：2020-05-10 03:22:25
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