Ответ:
\[\frac{7}{6}-\frac{1}{12}+\frac{1}{36}=\frac{42-3+1}{36}=\frac{40}{36}=\frac{10}{9}.\]
\[\frac{10}{9}\cdot\frac{72}{34}=\frac{10\cdot8}{34}=\frac{40}{17}.\]
Ответ: \(\frac{40}{17}\).
\[\frac{7}{6}-\frac{1}{12}+\frac{1}{36}=\frac{42-3+1}{36}=\frac{40}{36}=\frac{10}{9}.\]
\[\frac{10}{9}\cdot\frac{72}{34}=\frac{10\cdot8}{34}=\frac{40}{17}.\]
Ответ: \(\frac{40}{17}\).