TeX Quellcode:

\begin{array}{rclcll}\mathbb{D} &=& \mathbb{R} \cr\cr 0 &=& -12\cdot 5^{3x}\cdot 5^{-x+1}+60 &\vert& -60 \\-60 &=& -12\cdot 5^{3x}\cdot 5^{-x+1} \\-60 &=& -12\cdot 5^{2x+1} &\vert& :(-12) \\5 &=& 5^{2x+1} &\vert& \log_{5}() \\\log_{5} \left(5\right) &=& \log_{5} \left(5^{2x+1}\right) \\1 &=& 2x+1 &\vert& -1\\0 &=& 2x &\vert& :2\\x &=& 0\end{array}