60. Найдите произведение: 1) \(5\frac{3}{26}\); 3) \(\frac{9}{28} \cdot 56\); 5) \(5\frac{1}{7} \cdot \frac{8}{27}\);

Найдем произведение:

1. \(5 \cdot \frac{3}{26} = \frac{5 \cdot 3}{26} = \frac{15}{26}\)
2. \(\frac{9}{28} \cdot 56 = \frac{9 \cdot 56}{28} = \frac{9 \cdot 2}{1} = 18\)
3. \(5\frac{1}{7} \cdot \frac{8}{27} = \frac{36}{7} \cdot \frac{8}{27} = \frac{36 \cdot 8}{7 \cdot 27} = \frac{4 \cdot 8}{7 \cdot 3} = \frac{32}{21} = 1\frac{11}{21}\)

Ответ: 1) \(\frac{15}{26}\); 3) \(18\); 5) \(1\frac{11}{21}\)