TeX Quellcode:

\begin{array}{rclll} 7{,}5 &=& -x-\dfrac{1}{2} & \vert & +\dfrac{1}{2} \cr8 &=& -x & \vert & \cdot (-1) \cr-8 &=& x && \rightarrow \quad P_2(-8 \mid 7{,}5) \end{array}