Решение:

1. $$rac{3}{5} = \frac{3 \times 2}{5 \times 2} = \frac{6}{10} = 0,6$$
2. $$\frac{7}{25} = \frac{7 \times 4}{25 \times 4} = \frac{28}{100} = 0,28$$
3. $$\frac{3}{4} = \frac{3 \times 25}{4 \times 25} = \frac{75}{100} = 0,75$$
4. $$\frac{27}{50} = \frac{27 \times 2}{50 \times 2} = \frac{54}{100} = 0,54$$

Ответ:

• a) 0.6
• б) 0.28
• в) 0.75
• г) 0.54