TeX Quellcode:

\genfrac{}{}{1pt}{0}{-\frac{21}{8}}{-\frac{12}{5}} = -\dfrac{21}{8} : \left(-\dfrac{12}{5} \right) = -\dfrac{21}{8} \cdot \left(-\dfrac{5}{12} \right) = -\dfrac{7}{8} \cdot \left( -\dfrac{5}{4} \right) = \dfrac{35}{32}