把下面的分数用“古埃及分数”的和来表示
3112111---=---+------=----+----+------5()()3()()()...
3 1 1 2 1 1 1
--- = --- + --- --- = ---- + ---- +------
5 () () 3 ( ) ( ) ( ) 展开
--- = --- + --- --- = ---- + ---- +------
5 () () 3 ( ) ( ) ( ) 展开
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