Ответ:
а) \(9+5\dfrac{7}{10}=14\dfrac{7}{10}\).
б) \(10\dfrac{5}{7}+\dfrac{2}{12}=10+\dfrac{30}{42}+\dfrac{7}{42}=10\dfrac{37}{42}\).
в) \(7-1\dfrac{7}{8}=5\dfrac{1}{8}\).
г) \(5\dfrac{7}{15}-\dfrac{3}{20}=5+\dfrac{28}{60}-\dfrac{9}{60}=5\dfrac{19}{60}\).
д) \(7\dfrac{7}{12}-3\dfrac{2}{9}=4+\dfrac{21}{36}-\dfrac{8}{36}=4\dfrac{13}{36}\).
е) \(5\dfrac{3}{8}-3\dfrac{5}{6}=\dfrac{129}{24}-\dfrac{92}{24}=1\dfrac{13}{24}\).
Ответ: а) \(14\dfrac{7}{10}\); б) \(10\dfrac{37}{42}\); в) \(5\dfrac{1}{8}\); г) \(5\dfrac{19}{60}\); д) \(4\dfrac{13}{36}\); е) \(1\dfrac{13}{24}\).
