$\dfrac{-7}{14}-\dfrac{8}{14}$ =

$\dfrac{13}{10}+\dfrac{20}{10}$ =

$\dfrac{5}{5}-\dfrac{33}{35}$ =

$\dfrac{2}{9}+\dfrac{3}{18}$ =

$\dfrac{-61}{20}+2$ =

$\dfrac{-15}{14}+\dfrac{6}{7}$ =

$\dfrac{6}{4}-\dfrac{63}{44}$ =

$\dfrac{7}{5}+\dfrac{11}{3}$ =

$\dfrac{11}{5}+\dfrac{7}{9}$ =

$5-\dfrac{33}{8}$ =