$\dfrac{11}{40}+\dfrac{10}{40}$ =

$\dfrac{14}{40}+\dfrac{7}{40}$ =

$\dfrac{5}{15}+\dfrac{-13}{45}$ =

$\dfrac{1}{5}-\dfrac{1}{15}$ =

$\dfrac{17}{20}+\dfrac{2}{10}$ =

$\dfrac{-121}{24}+4$ =

$5+\dfrac{-197}{45}$ =

$\dfrac{5}{7}-\dfrac{14}{35}$ =

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

$\dfrac{7}{11}+\dfrac{2}{3}$ =