2 Вычислите: 3 5 a) 2= 2,8; 3 б) 8:1= 4 B) 1:2.4.

1. $$2 \frac{3}{5} = 2.6$$
2. $$2.6 = 2.8$$
3. $$2.6 < 2.8$$
4. $$8 \frac{3}{4} = \frac{8 \cdot 4 + 3}{4} = \frac{35}{4}$$
5. $$1 \frac{1}{3} = \frac{1 \cdot 3 + 1}{3} = \frac{4}{3}$$
6. $$\frac{35}{4} : \frac{4}{3} = \frac{35}{4} \cdot \frac{3}{4} = \frac{105}{16} = 6 \frac{9}{16}$$
7. $$1 : 2.4 = 1 : \frac{24}{10} = 1 \cdot \frac{10}{24} = \frac{10}{24} = \frac{5}{12}$$

Ответ: a) 2.6 b) $$6 \frac{9}{16}$$ c) $$\frac{5}{12}$$