TeX Quellcode:
\begin{array}{crcrcrcr} \text{I} & 16a &+& 4b &+& c &=& 3 \cr \text{II} & 4a &+& 2b &+& c &=& 0 \cr \text{III} & 25a &-& 5b &+& c &=& 5{,}25\end{array}