1) \(\frac{7}{11}:18\); 2) \(\frac{36}{49}:\frac{6}{7}\); 3) \(\frac{11}{28}\cdot\frac{7}{33}\); 4) \(\frac{22}{35}\cdot\frac{21}{44}\). Вычислите.
- \(\frac{7}{11}:18=\frac{7}{11}\cdot\frac{1}{18}=\frac{7}{198}\). Ответ: \(\frac{7}{198}\).
- \(\frac{36}{49}:\frac{6}{7}=\frac{36}{49}\cdot\frac{7}{6}=\frac{6}{7}\). Ответ: \(\frac{6}{7}\).
- \(\frac{11}{28}\cdot\frac{7}{33}=\frac{1}{4}\cdot\frac{1}{3}=\frac{1}{12}\). Ответ: \(\frac{1}{12}\).
- \(\frac{22}{35}\cdot\frac{21}{44}=\frac{1}{2}\cdot\frac{3}{5}=\frac{3}{10}\). Ответ: \(\frac{3}{10}\).