5/7=1/( ) +1/( ) +1/( )这道题什么算出这个答案啊5/7=1/2 +1/7 +1/14
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5/7=1/()+1/()+1/()这道题什么算出这个答案啊5/7=1/2+1/7+1/145/7=1/()+1/()+1/()这道题什么算出这个答案啊5/7=1/2+1/7+1/145/7=1/()
5/7=1/( ) +1/( ) +1/( )这道题什么算出这个答案啊5/7=1/2 +1/7 +1/14
5/7=1/( ) +1/( ) +1/( )这道题什么算出这个答案啊5/7=1/2 +1/7 +1/14
5/7=1/( ) +1/( ) +1/( )这道题什么算出这个答案啊5/7=1/2 +1/7 +1/14
5/7=10/14=(1+2+7)/14=1/14+2/14+7/14=1/14+1/7+1/2
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