Breuken delen (reeks 2)

Deel de breuken

\(\frac{9}{13} : \left(\frac{5}{-4}\right)\)

\(\frac{9}{13} : \left(\frac{5}{-4}\right)\\=-\frac{9}{13} . \frac{4}{5}\\=-\frac{9.4}{13.5}\\=-\frac{36}{65}\)