Решение:
a) \(\frac{3}{5} \cdot \frac{4}{3} = \frac{3 \cdot 4}{5 \cdot 3} = \frac{12}{15} = \frac{4}{5}\)
б) \(\frac{2}{5} \cdot \frac{9}{8} = \frac{2 \cdot 9}{5 \cdot 8} = \frac{18}{40} = \frac{9}{20}\)
в) \(\frac{4}{11} \cdot 11 = \frac{4 \cdot 11}{11} = 4\)
г) \(\frac{1}{8} \cdot \frac{16}{5} = \frac{1 \cdot 16}{8 \cdot 5} = \frac{16}{40} = \frac{2}{5}\)
д) \(\frac{1}{2} \cdot \frac{1}{3} = \frac{1 \cdot 1}{2 \cdot 3} = \frac{1}{6}\)
Ответ:
a) \(\frac{4}{5}\)
б) \(\frac{9}{20}\)
в) 4
г) \(\frac{2}{5}\)
д) \(\frac{1}{6}\)