14. Вычислите: $$\frac{29}{4} : 5\frac{4}{5} - \frac{3}{4} \cdot (3 - 1\frac{19}{30})$$.

Вычисляем: $$\frac{29}{4} : 5\frac{4}{5} - \frac{3}{4} \cdot (3 - 1\frac{19}{30}) = $$ $$\frac{29}{4} : \frac{29}{5} - \frac{3}{4} \cdot (3 - \frac{49}{30}) = $$ $$\frac{29}{4} \cdot \frac{5}{29} - \frac{3}{4} \cdot (\frac{90}{30} - \frac{49}{30}) = $$ $$\frac{5}{4} - \frac{3}{4} \cdot \frac{41}{30} = $$ $$\frac{5}{4} - \frac{1}{4} \cdot \frac{41}{10} = $$ $$\frac{5}{4} - \frac{41}{40} = $$ $$\frac{50}{40} - \frac{41}{40} = $$ $$\frac{9}{40} = 0.225$$ Ответ: 0.225