Breuken optellen (reeks 2)

Tel de breuken op

\(\frac{-15}{4}+\frac{9}{11}\)

\(\frac{-15}{4}+\frac{9}{11}\\=\frac{-165}{44}+\frac{36}{44}\\=\frac{-165+36}{44}\\=\frac{-129}{44}\)