6) \(1\frac{8}{16} + \left(4\frac{13}{14} + \frac{3}{7}\right)\)

1. \(\frac{8}{16}=\frac{1}{2}\), \(\frac{3}{7}=\frac{6}{14}\).
2. \(4\frac{13}{14}+\frac{6}{14}=4\frac{19}{14}=5\frac{5}{14}\).
3. \(1\frac{1}{2}+5\frac{5}{14}=6\frac{7}{14}+\frac{5}{14}=6\frac{12}{14}=6\frac{6}{7}\).

Ответ: \(6\frac{6}{7}\).