Đáp án:
10
Giải thích các bước giải:
\(\begin{array}{l}\frac{2}{5} + \frac{7}{2} + \frac{7}{8} + \frac{8}{5} + \frac{{12}}{{13}} + \frac{1}{8} + \frac{1}{2} + \frac{{27}}{{13}}\\ = \left( {\frac{2}{5} + \frac{8}{5}} \right) + \left( {\frac{7}{8} + \frac{1}{8}} \right) + \left( {\frac{7}{2} + \frac{1}{2}} \right) + \left( {\frac{{12}}{{13}} + \frac{{27}}{{13}}} \right)\\ = \,\,\,\,\,\,2\,\,\,\,\,\,\,\,\,\,\, + \,\,\,\,\,\,\,\,1\,\,\,\,\,\,\,\,\, + \,\,\,\,\,\,\,\,\,4\,\,\,\,\,\,\,\, + \,\,\,\,\,\,\,\,\,\,\,3\\ = \,\,\,\,\,10\end{array}\)
