TeX Quellcode:

\begin{array}{rcl} \genfrac{}{}{1pt}{0}{\frac{144x^2 y^{17}}{-35z^3}}{288x^{11}yz^{12}} &=& \dfrac{144x^2 y^{17}}{-35z^3} : \left(288x^{11}yz^{12} \right) \\\\&=& -\dfrac{144x^2 y^{17}}{35z^3} \cdot \dfrac{1}{288x^{11}yz^{12}} \\\\&=& -\dfrac{y^{16}}{35z^3} \cdot \dfrac{1}{2x^9z^{12}} \\\\&=& -\dfrac{y^{16}}{70x^9z^{15}} \end{array}