Răspuns :
[tex]\displaystyle\\-\frac{7}{9}:\left(-\frac{3}{1}\times\frac{1}{2}\right)=\\\\\\ \frac{-\dfrac{7}{9}}{-\dfrac{3}{1}\times\dfrac{1}{2}}=\frac{-\dfrac{7}{9}}{-\dfrac{3\times1}{1\times2}}=\frac{-\dfrac{7}{9}}{-\dfrac{3}{2}}=\frac{\dfrac{7}{9}}{\dfrac{3}{2}}=\dfrac{7}{9}\times\dfrac{2}{3}=\dfrac{7\times2}{9\times3}=\boxed{\bf\dfrac{14}{27}}[/tex]
