$\dfrac{5}{9}+\dfrac{6}{9}$ =

$\dfrac{7}{20}+\dfrac{2}{20}$ =

$\dfrac{5}{6}+\dfrac{1}{3}$ =

$3-\dfrac{53}{20}$ =

$\dfrac{4}{3}+\dfrac{-17}{21}$ =

$\dfrac{-2}{24}+\dfrac{3}{8}$ =

$\dfrac{1}{11}+\dfrac{17}{33}$ =

$\dfrac{5}{2}+\dfrac{3}{7}$ =

$\dfrac{-19}{21}+3$ =

$\dfrac{11}{3}+\dfrac{7}{4}$ =