将1,2,3,4,5,6,7,8,9不重复地填入以下九个方格中,使这三个分数相加等于1.()/()()+()/()()+()/()()=1

题目详情

将1,2,3,4,5,6,7,8,9不重复地填入以下九个方格中,使这三个分数相加等于1.
( )/( )( )+( )/( )( )+( )/( )( )=1

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答案和解析

( 9 )/( 1 )( 2 )+( 7 )/( 6 )( 8 )+( 5 )/( 3 )( 4 )=1

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