$\dfrac{(\dfrac{-6}{7})}{(\dfrac{-3}{2})}$=

$\dfrac{9}{2} : (\dfrac{-1}{2})$=

$\dfrac{3}{2}\times(\dfrac{-4}{9})$=

$(\dfrac{-3}{4}) : (\dfrac{-3}{2})$=

$\dfrac{2}{3}+(\dfrac{-7}{6})$=

$\dfrac{7}{9} : (\dfrac{-8}{9})$=

$\dfrac{8}{5}\times(\dfrac{-4}{9})$=

$\dfrac{1}{4}-(\dfrac{-1}{3})$=

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

$(\dfrac{-5}{2}) : \dfrac{5}{4}$=