Вариант 4. Задание 2: Выполните действия: a) \(\frac{1}{6}\) + \(\frac{3}{7}\), б) \(\frac{3}{8}\) + \(\frac{7}{16}\), в) \(\frac{7}{15}\) - \(\frac{3}{20}\), г) \(\frac{1}{8}\) + \(\frac{5}{6}\) - \(\frac{7}{12}\)

a) \(\frac{1}{6}\) + \(\frac{3}{7}\) = \(\frac{7}{42}\) + \(\frac{18}{42}\) = \(\frac{25}{42}\)
б) \(\frac{3}{8}\) + \(\frac{7}{16}\) = \(\frac{6}{16}\) + \(\frac{7}{16}\) = \(\frac{13}{16}\)
в) \(\frac{7}{15}\) - \(\frac{3}{20}\) = \(\frac{28}{60}\) - \(\frac{9}{60}\) = \(\frac{19}{60}\)
г) \(\frac{1}{8}\) + \(\frac{5}{6}\) - \(\frac{7}{12}\) = \(\frac{3}{24}\) + \(\frac{20}{24}\) - \(\frac{14}{24}\) = \(\frac{9}{24}\) = \(\frac{3}{8}\)