17/33 * 11/34 =

Решение примеров на умножение и деление дробей: Умножение: 1) $\frac{17}{33} \cdot \frac{11}{34} = \frac{17 \cdot 11}{33 \cdot 34} = \frac{1}{3} \cdot \frac{1}{2} = \frac{1}{6}$ 2) $\frac{7}{30} \cdot \frac{6}{21} = \frac{7 \cdot 6}{30 \cdot 21} = \frac{1}{5} \cdot \frac{1}{3} = \frac{1}{15}$ 3) $\frac{4}{12} \cdot \frac{18}{20} = \frac{1}{3} \cdot \frac{9}{10} = \frac{9}{30} = \frac{3}{10}$ 4) $\frac{21}{25} \cdot \frac{15}{42} = \frac{21 \cdot 15}{25 \cdot 42} = \frac{1}{5} \cdot \frac{3}{2} = \frac{3}{10}$ 5) $\frac{14}{24} \cdot \frac{16}{21} = \frac{7}{12} \cdot \frac{16}{21} = \frac{1}{3} \cdot \frac{4}{3} = \frac{4}{9}$ Деление: 1) $\frac{9}{42} : \frac{12}{21} = \frac{9}{42} \cdot \frac{21}{12} = \frac{3}{14} \cdot \frac{7}{4} = \frac{3 \cdot 1}{2 \cdot 4} = \frac{3}{8}$ 2) $\frac{17}{50} : \frac{18}{51} = \frac{17}{50} \cdot \frac{51}{18} = \frac{17 \cdot 17}{50 \cdot 6} = \frac{289}{300}$ 3) $\frac{3}{10} : \frac{27}{30} = \frac{3}{10} \cdot \frac{30}{27} = \frac{1}{1} \cdot \frac{3}{9} = \frac{1}{3}$ 4) $\frac{4}{11} : \frac{5}{22} = \frac{4}{11} \cdot \frac{22}{5} = \frac{4}{1} \cdot \frac{2}{5} = \frac{8}{5} = 1\frac{3}{5}$ 5) $\frac{63}{93} : \frac{30}{31} = \frac{21}{31} \cdot \frac{31}{30} = \frac{21}{30} = \frac{7}{10}$