1. Вычислите:
а) \(\frac{11}{17} + (-\frac{7}{17}) = \frac{11}{17} - \frac{7}{17} = \frac{11-7}{17} = \frac{4}{17}\)
Ответ: \(\frac{4}{17}\)
г) \(\frac{12}{19} - \frac{7}{19} = \frac{12-7}{19} = \frac{5}{19}\)
Ответ: \(\frac{5}{19}\)