1. Сократи: \(\frac{8}{14}, \frac{7}{63}, \frac{30}{84}, \frac{34 \cdot 12}{3 \cdot 17}\)

1. Сокращение дробей:

• \(\frac{8}{14} = \frac{8 \div 2}{14 \div 2} = \frac{4}{7}\)
• \(\frac{7}{63} = \frac{7 \div 7}{63 \div 7} = \frac{1}{9}\)
• \(\frac{30}{84} = \frac{30 \div 6}{84 \div 6} = \frac{5}{14}\)
• \(\frac{34 \cdot 12}{3 \cdot 17} = \frac{(2 \cdot 17) \cdot (3 \cdot 4)}{3 \cdot 17} = \frac{2 \cdot 17 \cdot 3 \cdot 4}{3 \cdot 17} = 2 \cdot 4 = 8\)

Ответ: \(\frac{4}{7}, \frac{1}{9}, \frac{5}{14}, 8\).