\[\boxed{\mathbf{2.}\mathbf{161}}\]
Пояснение.
Решение.
\[\frac{7}{13} < \frac{x}{13} < \frac{15}{13} \rightarrow x =\]
\[= \left\{ 8;9;10;11;12;13;14 \right\}.\]
\[Дроби:\]
\[\frac{8}{13};\frac{9}{13};\frac{10}{13};\frac{11}{13};\ \frac{12}{13};\ \frac{13}{13};\ \frac{14}{13}.\]