а) \( \frac{14}{18} - \frac{5}{18} = \frac{14-5}{18} = \frac{9}{18} = \frac{1}{2} \). б) \( \frac{5}{22} + \frac{6}{22} = \frac{5+6}{22} = \frac{11}{22} = \frac{1}{2} \). в) \( 6 \frac{7}{12} - 1 \frac{3}{12} = (6 - 1) + (\frac{7}{12} - \frac{3}{12}) = 5 + \frac{4}{12} = 5 \frac{1}{3} \). г) \( 7 \frac{4}{5} + 3 \frac{27}{27} = 7 \frac{4}{5} + 3 + \frac{27}{27} = 7 \frac{4}{5} + 4 = 11 \frac{4}{5} \). Ответ: а) \( \frac{1}{2} \), б) \( \frac{1}{2} \), в) \( 5 \frac{1}{3} \), г) \( 11 \frac{4}{5} \).