TeX Quellcode:

\begin{array}{rclcl} \mathbb{D} &=& \mathbb{R} \cr \cr 14(-x+2) & \leq & (4+2x)\cdot 7 \cr +28-14x & \leq & 28+14x & \vert & -28-14x \cr -28x & \leq & 0 & \vert & :\left(-28\right) \cr x & \geq & 0 \cr \cr \mathbb{L} &=& \mathbb{R}^+_0 \end{array}