1. Выполните умножение: 1) \(\frac{3}{4} \cdot \frac{5}{12}\), 2) \(1\frac{5}{7} \cdot 6\frac{1}{8}\), 3) \(\frac{1}{17} \cdot 51\)

1) \(\frac{3}{4} \cdot \frac{5}{12}\) = \(\frac{3 \cdot 5}{4 \cdot 12}\) = \(\frac{15}{48}\) = \(\frac{5}{16}\)

2) \(1\frac{5}{7} \cdot 6\frac{1}{8}\) = \(\frac{12}{7} \cdot \frac{49}{8}\) = \(\frac{12 \cdot 49}{7 \cdot 8}\) = \(\frac{3 \cdot 7}{1 \cdot 2}\) = \(\frac{21}{2}\) = \(10\frac{1}{2}\)

3) \(\frac{1}{17} \cdot 51\) = \(\frac{1 \cdot 51}{17}\) = \(\frac{51}{17}\) = 3

Ответ: 1) \(\frac{5}{16}\); 2) \(10\frac{1}{2}\); 3) 3