TeX Quellcode:

\begin{array}{rclcll}1{,}5x^2 + 3x &=&1{,}5x^2 + 10x + 14 &\vert & -1{,}5x^2 -3x \cr0 &=& 7x + 14 &\vert & -14 \cr-14 &=& 7x &\vert & :7 \cr x_1 &=& -2 \end{array}