a) \(-\frac{3}{17} - (-\frac{9}{17}) = -\frac{3}{17} + \frac{9}{17} = \frac{6}{17}\)
б) \(-\frac{8}{17} - (-\frac{3}{17}) = -\frac{8}{17} + \frac{3}{17} = -\frac{5}{17}\)
в) \(\frac{7}{13} - (-\frac{1}{13}) = \frac{7}{13} + \frac{1}{13} = \frac{8}{13}\)
г) \(-\frac{5}{14} - \frac{3}{7} = -\frac{5}{14} - \frac{6}{14} = -\frac{11}{14}\)
д) \(\frac{1}{2} - \frac{4}{5} = \frac{5}{10} - \frac{8}{10} = -\frac{3}{10}\)
е) \(-\frac{2}{3} - (-\frac{5}{6}) = -\frac{4}{6} + \frac{5}{6} = \frac{1}{6}\)
ж) \(-\frac{3}{4} - (-\frac{4}{9}) = -\frac{27}{36} + \frac{16}{36} = -\frac{11}{36}\)
з) \(\frac{3}{8} - \frac{5}{12} = \frac{9}{24} - \frac{10}{24} = -\frac{1}{24}\)