Breuken haakjesregel (reeks 1)

Bereken

\(-\left(\frac{-15}{-11}\right)-\left(\frac{-2}{13}\right)\)

\(-\left(\frac{-15}{-11}\right)-\left(\frac{-2}{13}\right)\\= \frac{-15}{11}+\frac{2}{13}\\=\frac{-195}{143}+\frac{22}{143}\\=\frac{-195+22}{143}\\=\frac{-173}{143}\)