Breuken . en :

Bereken

\(\frac{-4}{13} . \left(\frac{-7}{-11}\right).\left(\frac{-4}{-3}\right)\)

\(\frac{-4}{13} . \left(\frac{-7}{-11}\right).\left(\frac{-4}{-3}\right)\\=-\frac{4.7.4}{13.11.3}\\=-\frac{112}{429}\)