[(8 + 7/14) x (1/2 + 3/9)] + 5/8 = ?

Решение:

1. \( \frac{7}{14} = \frac{1}{2} \)
2. \( 8 + \frac{1}{2} = \frac{16}{2} + \frac{1}{2} = \frac{17}{2} \)
3. \( \frac{1}{2} + \frac{3}{9} = \frac{1}{2} + \frac{1}{3} = \frac{3}{6} + \frac{2}{6} = \frac{5}{6} \)
4. \( \frac{17}{2} \times \frac{5}{6} = \frac{85}{12} \)
5. \( \frac{85}{12} + \frac{5}{8} = \frac{170}{24} + \frac{15}{24} = \frac{185}{24} \)

Ответ: \( \frac{185}{24} \)