a) \(\frac{1}{8}\)
\(\frac{1}{8} = \frac{1}{2} \cdot \frac{1}{4}\)
б) \(\frac{5}{9}\)
\(\frac{5}{9} = \frac{5}{3} \cdot \frac{1}{3}\)
в) \(\frac{15}{14}\)
\(\frac{15}{14} = \frac{3}{2} \cdot \frac{5}{7}\)
г) \(1\frac{7}{18} = \frac{25}{18}\)
\(\frac{25}{18} = \frac{5}{6} \cdot \frac{5}{3}\)
Ответ: a) \(\frac{1}{2} \cdot \frac{1}{4}\); б) \(\frac{5}{3} \cdot \frac{1}{3}\); в) \(\frac{3}{2} \cdot \frac{5}{7}\); г) \(\frac{5}{6} \cdot \frac{5}{3}\)