Breuken + en -

Bereken

\(\frac{-6}{19}+\frac{3}{11}\)

\(\frac{-6}{19}+\frac{3}{11}\\=\frac{-66}{209}+\frac{57}{209}\\=\frac{-66+57}{209}\\=\frac{-9}{209}\\=\frac{9}{-209}\)