TeX Quellcode:

\begin{array}{rclll} \genfrac{}{}{1pt}{0}{-\frac{31}{2r^2}}{\frac{t}{10}} &=& -\dfrac{31}{2r^2} : \dfrac{t}{10} \cr\cr &=& -\dfrac{31}{2r^2} \cdot \dfrac{10}{t} \cr\cr &=& -\dfrac{31}{r^2} \cdot \dfrac{5}{t} \cr\cr &=& -\dfrac{155}{r^2t}\end{array}