Đáp án`+`Giải thích các bước giải:

`1/2 - (-2/5) + 1/3 + 5/7 - (-1/6) + (-4/35) + 1/41`

`= 1/2 + 2/5 + 1/3 + 5/7 + 1/6 - 4/35 + 1/41`

`= (1/2 + 1/3 + 1/6) + (2/5 + 5/7 - 4/35) + 1/41`

`= 1 + 1 + 1/41`

`= 83/41`

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