TeX Quellcode:

\begin{array}{rclcl}\dfrac{3x}{3+x}+\dfrac{2x}{3-x} & > & 1 &\vert & \cdot\left(3+x\right) \cr\cr 3x+\dfrac{2x(3+x)}{3-x} & > & 3+x\end{array}