Breuken haakjesregel (reeks 1)

Bereken

\(+\left(\frac{4}{15}\right)+\left(\frac{-2}{-13}\right)\)

\(+\left(\frac{4}{15}\right)+\left(\frac{-2}{-13}\right)\\= \frac{4}{15}+\frac{2}{13}\\=\frac{52}{195}+\frac{30}{195}\\=\frac{52+30}{195}\\=\frac{82}{195}\)