Breuken verm. (reeks 3)

Vermenigvuldig de breuken

\(\frac{11}{-9} . \frac{7}{2}.\left(\frac{12}{-9}\right)\)

\(\frac{11}{-9} . \frac{7}{2}.\left(\frac{12}{-9}\right)\\=+\frac{11}{9}.\frac{7}{2}.\frac{4}{3}\\=+\frac{11.7.4}{9.2.3}\\=\frac{308}{54}\\=\frac{154}{27}\)