4. Выполни действия: $$\left(1,3 - 3\frac{7}{15}\right) : 0,7 + 2,4 \cdot \left(-4\frac{1}{6}\right)$$

1. $$3\frac{7}{15} = \frac{3 \cdot 15 + 7}{15} = \frac{45 + 7}{15} = \frac{52}{15}$$ 2. $$1,3 = \frac{13}{10}$$ 3. $$\frac{13}{10} - \frac{52}{15} = \frac{13 \cdot 3}{10 \cdot 3} - \frac{52 \cdot 2}{15 \cdot 2} = \frac{39}{30} - \frac{104}{30} = \frac{39 - 104}{30} = \frac{-65}{30} = -\frac{13}{6}$$ 4. $$-4\frac{1}{6} = -\frac{4 \cdot 6 + 1}{6} = -\frac{25}{6}$$ 5. $$0,7 = \frac{7}{10}$$ 6. $$-\frac{13}{6} : \frac{7}{10} = -\frac{13}{6} \cdot \frac{10}{7} = -\frac{13 \cdot 10}{6 \cdot 7} = -\frac{130}{42} = -\frac{65}{21}$$ 7. $$2,4 = \frac{24}{10} = \frac{12}{5}$$ 8. $$\frac{12}{5} \cdot \left(-\frac{25}{6}\right) = -\frac{12 \cdot 25}{5 \cdot 6} = -\frac{300}{30} = -10$$ 9. -\frac{65}{21} - 10 = -\frac{65}{21} - \frac{10 \cdot 21}{21} = -\frac{65}{21} - \frac{210}{21} = -\frac{65 + 210}{21} = -\frac{275}{21} = -13\frac{2}{21}$$ **Ответ:** $$-13\frac{2}{21}$$