$\dfrac{12}{20}+\dfrac{9}{20}$ =

$\dfrac{16}{20}-\dfrac{5}{20}$ =

$\dfrac{1}{11}+\dfrac{13}{22}$ =

$\dfrac{1}{15}+\dfrac{4}{45}$ =

$\dfrac{-100}{21}+4$ =

$\dfrac{-47}{15}+\dfrac{1}{5}$ =

$\dfrac{-132}{25}+6$ =

$\dfrac{7}{2}+\dfrac{11}{5}$ =

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

$\dfrac{-30}{14}+\dfrac{5}{2}$ =