2. Вычислите:
$$5\frac{3}{8} \cdot 7 - 3\frac{2}{3} \cdot 7\frac{10}{11} + 7\frac{2}{15} \cdot 1\frac{7}{8} = \frac{43}{8} \cdot 7 - \frac{11}{3} \cdot \frac{87}{11} + \frac{107}{15} \cdot \frac{15}{8} = \frac{301}{8} - \frac{11 \cdot 87}{3 \cdot 11} + \frac{107 \cdot 15}{15 \cdot 8} = \frac{301}{8} - \frac{87}{3} + \frac{107}{8} = \frac{301}{8} - 29 + \frac{107}{8} = \frac{301 + 107}{8} - 29 = \frac{408}{8} - 29 = 51 - 29 = 22$$
Ответ: 22