\[\boxed{\mathbf{2.445}}\]
Пояснение.
Решение.
\[\textbf{а)}\ \frac{10}{36} \rightarrow \frac{36}{10} = 3,6\]
\[\frac{13}{65} \rightarrow \frac{65}{13} = 5\]
\[\frac{31}{65} \rightarrow \frac{65}{31} = 2\frac{3}{31}\]
\[\frac{13}{134} \rightarrow \frac{134}{13} = 10\frac{4}{13}\]
\[\frac{17}{428} \rightarrow \frac{428}{17} = 25\frac{3}{17}\]
\[\frac{10}{4} \rightarrow \frac{4}{10} = \frac{2}{5}\]
\[\frac{36}{7} \rightarrow \frac{7}{36}\]
\[\textbf{б)}\ 13\frac{13}{14} = \frac{195}{14} \rightarrow \frac{14}{195}\]
\[\frac{1}{40} \rightarrow 40\]
\[50 \rightarrow \frac{1}{50}\]
\[100 \rightarrow \frac{1}{100}\]
\[1 \rightarrow 1\]
\[0,5 = \frac{5}{10} = \frac{1}{2} \rightarrow 2\]
\[2,8 = \frac{28}{100} = \frac{7}{25} \rightarrow \frac{25}{7} = 3\frac{4}{7}\]