[tex]Solution: \\ \\ \frac{1}{5}\times 7\ +\ \frac{1}{7} \times 9;\ is\ also\ the\ same\ as \\ \\ \to (\frac{1}{5}\times 7)\ +\ ( \frac{1}{7} \times 9) \\ \\ \to \frac{7}{5}\ +\ \frac{9}{7} \\ \\ \to \frac{49\ +\ 45}{35} \\ \\ \to \boxed{\frac{94}{35}\ or\ 2 \frac{24}{35} } \\ \\ \\ Hope\ it\ Helps =) \\ Domini[/tex]