TeX Quellcode:

\begin{array}{rclcl} 6(6t+1) &=& \dfrac{9+6t}{t} &\vert& \cdot t \cr\cr 6t(6t+1) &=& 9+6t \cr 36t^2+6t &=& 9+6t &\vert& -6t \cr 36t^2 &=& 9 &\vert& :36 \cr t^2 &=& \dfrac{1}{4} &\vert& \pm \sqrt{} \cr\cr t_{1,2} &=& \pm \dfrac{1}{2} \in\mathbb{D} \cr \cr \mathbb{L} &=& \left\{-\dfrac{1}{2}; \dfrac{1}{2}\right\} \end{array}