$25 \times\dfrac{6}{50}$ =

$\dfrac{13}{21}\times 2$ =

$\dfrac{-23}{5}\times\dfrac{-2}{11}$ =

$\dfrac{1}{10}\times\dfrac{23}{3}$ =

$\dfrac{15}{5}\times\dfrac{11}{10}$ =

$\dfrac{5}{20}\times\dfrac{17}{9}$ =

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

$-17 \times\dfrac{4}{34}$ =

$\dfrac{5}{22}\times\dfrac{5}{3}$ =

$\dfrac{7}{6}\times\dfrac{21}{15}$ =