$\dfrac{16}{8}+\dfrac{-7}{8}$ =

$\dfrac{3}{30}+\dfrac{4}{30}$ =

$\dfrac{2}{7}+\dfrac{4}{21}$ =

$1+\dfrac{7}{15}$ =

$\dfrac{-16}{10}+\dfrac{1}{2}$ =

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

$\dfrac{3}{14}+\dfrac{39}{28}$ =

$\dfrac{7}{3}+\dfrac{5}{4}$ =

$3+\dfrac{-39}{20}$ =

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