Приведите дроби \(\frac{4}{9}\), \(\frac{5}{6}\), \(\frac{7}{2}\) и \(\frac{4}{3}\) к знаменателю 18.

1. \(\frac{4}{9}=\frac{4\cdot2}{9\cdot2}=\frac{8}{18}\).
2. \(\frac{5}{6}=\frac{5\cdot3}{6\cdot3}=\frac{15}{18}\).
3. \(\frac{7}{2}=\frac{7\cdot9}{2\cdot9}=\frac{63}{18}\).
4. \(\frac{4}{3}=\frac{4\cdot6}{3\cdot6}=\frac{24}{18}\).

Ответ: \(\frac{8}{18},\ \frac{15}{18},\ \frac{63}{18},\ \frac{24}{18}\).