а)
\[14 \frac{5}{18} - \frac{6}{18} = 13 \frac{18+5}{18} - \frac{6}{18} = 13 \frac{23}{18} - \frac{6}{18} = 13 \frac{23 - 6}{18} = 13 \frac{17}{18}\]
б)
\[\frac{5}{22} + \frac{6}{22} = \frac{5 + 6}{22} = \frac{11}{22} = \frac{1}{2}\]
в)
\[6 \frac{7}{12} - 1 \frac{3}{12} = (6 - 1) + (\frac{7}{12} - \frac{3}{12}) = 5 + \frac{4}{12} = 5 \frac{1}{3}\]
Ответ: а) \(13 \frac{17}{18}\); б) \(\frac{1}{2}\); в) \(5 \frac{1}{3}\)