Решим данное задание, выполнив действия с дробями.
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а) \(\frac{1}{3} + \frac{1}{2} = \frac{2}{6} + \frac{3}{6} = \frac{5}{6}\).
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б) \(\frac{2}{5} + \frac{3}{10} = \frac{4}{10} + \frac{3}{10} = \frac{7}{10}\).
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в) \(\frac{7}{8} - \frac{3}{16} = \frac{14}{16} - \frac{3}{16} = \frac{11}{16}\).
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г) \(\frac{11}{12} - \frac{3}{4} = \frac{11}{12} - \frac{9}{12} = \frac{2}{12} = \frac{1}{6}\).
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д) \(\frac{4}{15} + \frac{3}{12} = \frac{4}{15} + \frac{1}{4} = \frac{16}{60} + \frac{15}{60} = \frac{31}{60}\).
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е) \(\frac{2}{9} + \frac{11}{15} = \frac{10}{45} + \frac{33}{45} = \frac{43}{45}\).
Ответ: а) \(\frac{5}{6}\); б) \(\frac{7}{10}\); в) \(\frac{11}{16}\); г) \(\frac{1}{6}\); д) \(\frac{31}{60}\); e) \(\frac{43}{45}\).