$\dfrac{6}{14}+\dfrac{19}{14}$ =

$\dfrac{19}{6}+\dfrac{-44}{6}$ =

$\dfrac{5}{8}-\dfrac{22}{40}$ =

$\dfrac{1}{9}-\dfrac{13}{18}$ =

$5-\dfrac{121}{25}$ =

$\dfrac{6}{7}-\dfrac{2}{21}$ =

$4-\dfrac{89}{24}$ =

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

$\dfrac{5}{4}+\dfrac{7}{11}$ =

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