Ответ:

[tex] \frac{1}{16} + \frac{2}{18} + \frac{3}{16} + \frac{4}{18} + \frac{5}{16} + \frac{6}{18} + \frac{7}{16} + \frac{8}{18} + \frac{9}{16} + \frac{10}{18} + \frac{11}{16} + \frac{12}{18} + \frac{13}{16} + \frac{14}{18} + \frac{15}{16} + \frac{16}{18} = \frac{1 + 3 + 5 + 7 + 9 + 11 + 13 + 15}{16} + \frac{2 + 4 + 6 + 8 + 10 + 12 + 14 + 16}{18} = \frac{64}{16} + \frac{72}{18} = 4 + 4 = 8[/tex]