TeX Quellcode:
\begin{array}{rclcl}3x+\dfrac{2x(3+x)}{3-x} & > & 3+x & \vert & \cdot \left(3-x\right) \\3x(3-x) + 2x(3+x) & < & (3+x)(3-x) \\9x-3x^2+6x+2x^2 & < & 9 - x^2 \\15x - x^2 & < & 9 - x^2 & \vert & +x^2 \\15x & < & 9 & \vert & :15 \\x & < & \dfrac{3}{5}\end{array}