TeX Quellcode:
\begin{array}{rclcl}\mathbb{D} &=& \mathbb{R} \cr \cr 48^{\frac{1}{18}x-39} &=& 48 &\vert& \log_{48}() \cr \dfrac{1}{18}x-39 &=& 1 &\vert& +39 \cr \dfrac{1}{18}x &=& 40 &\vert& : \dfrac{1}{18} \cr x &=& 720 \cr \cr \mathbb{L} &=& \left\{720\right\}\end{array}