Breuken haakjesregel (reeks 1)

Bereken

\(+\left(\frac{10}{-13}\right)-\left(\frac{-8}{13}\right)\)

\(+\left(\frac{10}{-13}\right)-\left(\frac{-8}{13}\right)\\= \frac{-10}{13}+\frac{8}{13}\\=\frac{-10+8}{13}\\=\frac{-2}{13}\)