2 7 2 .4+1,25.2.

Решение:

$$2\frac{2}{7} \cdot 4 + 1,25 \cdot 2\frac{2}{7} = \frac{2 \cdot 7 + 2}{7} \cdot 4 + 1,25 \cdot \frac{2 \cdot 7 + 2}{7} = \frac{16}{7} \cdot 4 + \frac{125}{100} \cdot \frac{16}{7} = \frac{64}{7} + \frac{5}{4} \cdot \frac{16}{7} = \frac{64}{7} + \frac{5 \cdot 4 \cdot 4}{4 \cdot 7} = \frac{64}{7} + \frac{20}{7} = \frac{84}{7} = 12$$

Ответ: 12