TeX Quellcode:

\begin{array}{rclcl} \mathbb{D} &=& \mathbb{R} \\\\ 2^{5+x} &=& 8^x \\2^{5+x} &=& \left(2^3\right)^x \\2^{5+x} &=& 2^{3x} &\vert& \text{ld}() \\5+x &=& 3x &\vert& -x \\5 &=& 2x &\vert& :2 \\\dfrac{5}{2} &=& x \\\\\mathbb{L} &=& \left\{\dfrac{5}{2}\right\}\end{array}