Ответ:
\[\frac{29}{4}:5\frac{4}{5}=\frac{29}{4}:\frac{29}{5}=\frac{5}{4}.\]
\[3-1\frac{19}{30}=3-\frac{49}{30}=\frac{41}{30}.\]
\[\frac{3}{4}\cdot\frac{41}{30}=\frac{41}{40}.\]
\[\frac{5}{4}-\frac{41}{40}=\frac{50-41}{40}=\frac{9}{40}.\]
Ответ: \(\frac{9}{40}\).
