a) \(=\dfrac{7}{12}+\dfrac{5}{6}=\dfrac{17}{12}\)
b) \(=\dfrac{73}{63}-\dfrac{8}{21}=\dfrac{7}{9}\)
c) \(=\dfrac{7}{6}+\dfrac{33}{18}=3\)
d) \(=\dfrac{24}{27}-\dfrac{7}{9}=\dfrac{1}{9}\)
e) \(=\dfrac{7}{8}:\dfrac{49}{6}+\dfrac{4}{28}=\dfrac{3}{28}+\dfrac{4}{28}=\dfrac{1}{4}\)
