a: \(=\dfrac{3}{5}+\dfrac{1}{2}=\dfrac{11}{10}\)
b: \(=\dfrac{-2}{5}+\dfrac{3}{4}=\dfrac{-8+15}{20}=\dfrac{7}{20}\)
c: \(=-5-\dfrac{1}{6}=-\dfrac{31}{6}\)
d: \(=-2\cdot\dfrac{-3}{7}=\dfrac{6}{7}\)
e: \(=\dfrac{28}{33}\cdot\dfrac{3}{4}=\dfrac{7}{11}\)