TeX Quellcode:

\begin{array}{rclll} 0 &=& \sqrt{14x+35} &\vert & ()^2 \cr 0 &=& 14x+35 &\vert & -35 \cr -35 &=& 14x &\vert & :14 \cr -\dfrac{35}{14} &=& x \cr x &=& -\dfrac{5}{2} \in\mathbb{D}\end{array}