1. Выполните умножение: 1) 8/26 · 5/56; 2) 5/6 · 7/9; 3) 87/88 · 24/37; 4) 27/56 · 35/81.

1. \(\frac{8}{26}\cdot\frac{5}{56}=\frac{4}{13}\cdot\frac{5}{56}=\frac{5}{182}\).
2. \(\frac{5}{6}\cdot\frac{7}{9}=\frac{35}{54}\).
3. \(\frac{87}{88}\cdot\frac{24}{37}=\frac{3}{88}\cdot24=\frac{72}{88}=\frac{9}{11}\).
4. \(\frac{27}{56}\cdot\frac{35}{81}=\frac{1}{3}\cdot\frac{5}{8}=\frac{5}{24}\).

Ответ: 1) \(\frac{5}{182}\); 2) \(\frac{35}{54}\); 3) \(\frac{9}{11}\); 4) \(\frac{5}{24}\).