1. Сократите: | 12 75 26.5 84'120'25-13

1. Сократите:

$$\frac{12}{84} = \frac{12:12}{84:12} = \frac{1}{7}$$

$$\frac{75}{120} = \frac{75:5}{120:5} = \frac{15}{24} = \frac{15:3}{24:3} = \frac{5}{8}$$

$$\frac{26 \cdot 5}{25 \cdot 13} = \frac{2 \cdot 13 \cdot 5}{5 \cdot 5 \cdot 13} = \frac{2}{5}$$

Ответ: $$\frac{1}{7}; \frac{5}{8}; \frac{2}{5}$$