EAST哦``` 解:∵a+ 1/a+1 =b+ 1/b-1-2 ∴a-b+2=1/b-1-1/a 即:1/b-1/a-1=0 通分:(a-b)/ab=1 ∴a-b=-2=ab ab-a+b=ab-(a-b)=-2-(-2)=0