Вариант 3. Задание 2: Выполните действия: a) \(\frac{1}{5}\) + \(\frac{4}{11}\), б) \(\frac{3}{7}\) + \(\frac{5}{14}\), в) \(\frac{8}{9}\) - \(\frac{7}{12}\), г) \(\frac{11}{50}\) - \(\frac{3}{25}\) + \(\frac{1}{20}\)

a) \(\frac{1}{5}\) + \(\frac{4}{11}\) = \(\frac{11}{55}\) + \(\frac{20}{55}\) = \(\frac{31}{55}\)
б) \(\frac{3}{7}\) + \(\frac{5}{14}\) = \(\frac{6}{14}\) + \(\frac{5}{14}\) = \(\frac{11}{14}\)
в) \(\frac{8}{9}\) - \(\frac{7}{12}\) = \(\frac{32}{36}\) - \(\frac{21}{36}\) = \(\frac{11}{36}\)
г) \(\frac{11}{50}\) - \(\frac{3}{25}\) + \(\frac{1}{20}\) = \(\frac{22}{100}\) - \(\frac{12}{100}\) + \(\frac{5}{100}\) = \(\frac{15}{100}\) = \(\frac{3}{20}\)