Breuken verm. (reeks 3)

Vermenigvuldig de breuken

\(\frac{9}{14} . \left(\frac{-4}{5}\right).\left(\frac{8}{-10}\right)\)

\(\frac{9}{14} . \left(\frac{-4}{5}\right).\left(\frac{8}{-10}\right)\\=+\frac{9}{14}.\frac{4}{5}.\frac{4}{5}\\=+\frac{9.4.4}{14.5.5}\\=\frac{144}{350}\\=\frac{72}{175}\)