$\dfrac{4}{21}+\dfrac{6}{21}$ =

$\dfrac{4}{35}-\dfrac{10}{35}$ =

$\dfrac{3}{6}+\dfrac{19}{12}$ =

$\dfrac{6}{8}+\dfrac{7}{24}$ =

$\dfrac{24}{14}+\dfrac{3}{2}$ =

$\dfrac{-124}{45}+3$ =

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

$\dfrac{-25}{6}+5$ =

$\dfrac{19}{28}+\dfrac{3}{14}$ =

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