2. Сократите дроби: 3 4 18 13η ; 18 16 54 52η

Сократим дроби:

$$\frac{3}{18} = \frac{3 \div 3}{18 \div 3} = \frac{1}{6}$$

$$\frac{4}{16} = \frac{4 \div 4}{16 \div 4} = \frac{1}{4}$$

$$\frac{18}{54} = \frac{18 \div 18}{54 \div 18} = \frac{1}{3}$$

$$\frac{13n}{52n} = \frac{13n \div 13n}{52n \div 13n} = \frac{1}{4}$$

Ответ: $$\frac{1}{6}$$, $$\frac{1}{4}$$, $$\frac{1}{3}$$, $$\frac{1}{4}$$