Breuken optellen (reeks 2)

Tel de breuken op

\(\frac{-19}{10}+\frac{12}{7}\)

\(\frac{-19}{10}+\frac{12}{7}\\=\frac{-133}{70}+\frac{120}{70}\\=\frac{-133+120}{70}\\=\frac{-13}{70}\\=\frac{13}{-70}\)