Ответ:

  1. \(\frac{2}{9}\cdot6=\frac{12}{9}=1\frac{1}{3}\).
  2. \(\frac{3}{2}\cdot\frac{7}{4}=\frac{21}{8}=2\frac{5}{8}\).
  3. \(\frac{3}{7}\cdot5=\frac{15}{7}=2\frac{1}{7}\).
  4. \(\frac{2}{3}\cdot\frac{5}{4}=\frac{10}{12}=\frac{5}{6}\).

Ответ: а) \(1\frac{1}{3}\); б) \(2\frac{5}{8}\); в) \(2\frac{1}{7}\); г) \(\frac{5}{6}\).