Ответ:
Используем правило: \(a\frac{b}{c}=\frac{ac+b}{c}\).
\(1\frac{2}{5}=\frac{1\cdot5+2}{5}=\frac{7}{5}\); \(3\frac{5}{9}=\frac{3\cdot9+5}{9}=\frac{32}{9}\).
\(2\frac{3}{11}=\frac{2\cdot11+3}{11}=\frac{25}{11}\); \(8\frac{11}{15}=\frac{8\\cdot15+11}{15}=\frac{131}{15}\).
\(9\frac{1}{20}=\frac{9\cdot20+1}{20}=\frac{181}{20}\).
Ответ: \(\frac75,\frac{32}{9},\frac{25}{11},\frac{131}{15},\frac{181}{20}\).
