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有理数混合运算，复杂分数计算，发现规律很重要
有理数混合运算，复杂分数计算，发现规律很重要 𝟏/𝟐+(𝟏/𝟑+𝟐/𝟑)+(𝟏/𝟒+𝟐/𝟒+𝟑/𝟒)+…+(𝟏/𝟔𝟎+𝟐/𝟔𝟎+…+𝟓𝟖/𝟔𝟎+𝟓𝟗/𝟔𝟎)
干果数学未分类视频归纳14/53
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