Breuken optellen (reeks 2)

Tel de breuken op

\(\frac{-15}{8}+\frac{2}{7}\)

\(\frac{-15}{8}+\frac{2}{7}\\=\frac{-105}{56}+\frac{16}{56}\\=\frac{-105+16}{56}\\=\frac{-89}{56}\\=\frac{89}{-56}\)