3. Выполните сложение (2 вариант)

a) \(\frac{1}{6} + \frac{5}{12} = \frac{2}{12} + \frac{5}{12} = \frac{7}{12}\) б) \(8\frac{11}{30} + 2\frac{9}{20} = 8 + 2 + \frac{11}{30} + \frac{9}{20} = 10 + \frac{22}{60} + \frac{27}{60} = 10 + \frac{49}{60} = 10\frac{49}{60}\) в) \(2\frac{5}{12} + 3\frac{33}{36} = 2 + 3 + \frac{5}{12} + \frac{33}{36} = 5 + \frac{15}{36} + \frac{33}{36} = 5 + \frac{48}{36} = 5 + 1\frac{12}{36} = 6\frac{1}{3}\)