№1 Выполните: а) 4/27 · 3/32; б) 3/8 · 5/7; в) 19/56 · 49/19.

1. \(\frac{4}{27}\cdot\frac{3}{32}=\frac{4\cdot3}{27\cdot32}=\frac{1}{72}\).

2. \(\frac{3}{8}\cdot\frac{5}{7}=\frac{3\cdot5}{8\cdot7}=\frac{15}{56}\).

3. \(\frac{19}{56}\cdot\frac{49}{19}=\frac{49}{56}=\frac{7}{8}\).

Ответ: а) \(\frac{1}{72}\); б) \(\frac{15}{56}\); в) \(\frac{7}{8}\).