Найдите значение выражения: (11/10+11/13):22/39.

\[\left( \frac{11^{\backslash 13}}{10} + \frac{11^{\backslash 10}}{13} \right)\ :\frac{22}{39} =\]

\[= \frac{143 + 110}{130} \cdot \frac{39}{22} = \frac{253}{130} \cdot \frac{39}{22} =\]

\[= \frac{23 \cdot 3}{10 \cdot 2} = \frac{69}{20} = 3\frac{9}{20} = 3,45.\]