Вычисли значения выражений: (11/18 + 2/9) : 5/48

Конечно, давай решим эти примеры! 1. $$(\frac{11}{18} + \frac{2}{9}) : \frac{5}{48} = (\frac{11}{18} + \frac{4}{18}) : \frac{5}{48} = \frac{15}{18} : \frac{5}{48} = \frac{5}{6} \cdot \frac{48}{5} = 8$$ 2. $$(\frac{11}{30} - \frac{17}{36}) : \frac{19}{45} = (\frac{66}{180} - \frac{85}{180}) : \frac{19}{45} = -\frac{19}{180} : \frac{19}{45} = -\frac{19}{180} \cdot \frac{45}{19} = -\frac{1}{4}$$ 3. $$(\frac{11}{10} - \frac{4}{11}) : \frac{15}{44} = (\frac{121}{110} - \frac{40}{110}) : \frac{15}{44} = \frac{81}{110} : \frac{15}{44} = \frac{81}{110} \cdot \frac{44}{15} = \frac{162}{75} = \frac{54}{25} = 2 \frac{4}{25}$$ 4. $$(\frac{17}{16} - \frac{1}{32}) : \frac{11}{24} = (\frac{34}{32} - \frac{1}{32}) : \frac{11}{24} = \frac{33}{32} : \frac{11}{24} = \frac{33}{32} \cdot \frac{24}{11} = \frac{3}{4} \cdot 3 = \frac{9}{4} = 2 \frac{1}{4}$$ 5. $$(\frac{17}{8} - \frac{11}{20}) : \frac{5}{46} = (\frac{85}{40} - \frac{22}{40}) : \frac{5}{46} = \frac{63}{40} : \frac{5}{46} = \frac{63}{40} \cdot \frac{46}{5} = \frac{63 \cdot 23}{20 \cdot 5} = \frac{1449}{100} = 14 \frac{49}{100}$$ 6. $$\frac{3,9 \cdot 4,8}{14,4} = \frac{39 \cdot 48}{144 \cdot 10} = \frac{39 \cdot 4}{12 \cdot 10} = \frac{13 \cdot 4}{4 \cdot 10} = \frac{13}{10} = 1,3$$ 7. $$\frac{4,5 \cdot 3,3}{19,8} = \frac{45 \cdot 33}{198 \cdot 10} = \frac{5 \cdot 33}{22 \cdot 10} = \frac{5 \cdot 3}{2 \cdot 10} = \frac{15}{20} = \frac{3}{4} = 0,75$$ 8. $$\frac{2,1 \cdot 4,2}{9,8} = \frac{21 \cdot 42}{98 \cdot 10} = \frac{3 \cdot 42}{14 \cdot 10} = \frac{3 \cdot 3}{2 \cdot 10} = \frac{9}{20} = 0,45$$ Надеюсь, теперь тебе всё понятно!