1/5+(  )/5+2/( )+2/(  )=2

1/5+(  )/5+2/( )+2/(  )=2
1/5+(  )/5+2/( )+2/(  )=2

1/5+(  )/5+2/( )+2/(  )=2
1/5+( 4 )/5+2/(4)+2/( 4)=2

5 5 5

1/5+( 4 )/5+2/(4)+2/( 4)=2
还有别的答案吗？楼主请告知，谢谢！

都是4

1 5 5

1/5+4/5+2/2+2/2

1/5+5/5=2/5+2/5=2

5 5 5
4 4 4

利用公式：1/a=a+1/a(a+1)=1/a+1 +1/a(a+1)
得 1/5+4/5+2/3+2/6

1/5+（4）/5+2/（4）+2/（4）=2

5 5 5
4 4 4,一目了然

1/5+(2)/5+2/(5)+2/(2)

1/5+( 4 )/5+2/(4)+2/( 4)=2