2. $$4 \frac{1}{2} \cdot \frac{43}{50} - \frac{8}{125} \cdot 4$$

1. $$4 \frac{1}{2} = \frac{4 \cdot 2 + 1}{2} = \frac{9}{2}$$
2. $$\frac{9}{2} \cdot \frac{43}{50} = \frac{9 \cdot 43}{2 \cdot 50} = \frac{387}{100} = 3.87$$
3. $$\frac{8}{125} \cdot 4 = \frac{8 \cdot 4}{125} = \frac{32}{125} = 0.256$$
4. $$3.87 - 0.256 = 3.614$$

Ответ: 3.614