Tính: \(\frac{{ - 3}}{8} + \frac{{12}}{{25}} + \frac{5}{{ - 8}} + \frac{2}{{ - 5}} + \frac{{13}}{{25}} + 1\)

* Hướng dẫn giải

\(\frac{{ - 3}}{8} + \frac{{12}}{{25}} + \frac{5}{{ - 8}} + \frac{2}{{ - 5}} + \frac{{13}}{{25}} + 1 = \left( {\frac{{ - 3}}{8} + \frac{{ - 5}}{8}} \right) + \left( {\frac{{12}}{{25}} + \frac{{13}}{{25}}} \right) + 1 - \frac{2}{5} =  - 1 + 1 + 1 - \frac{2}{5} = \frac{3}{5}\)

Chọn A.