TeX Quellcode:
\begin{array}{rcrcrcrl} -\dfrac{3}{2}x_1 &+& \dfrac{1}{7}x_2 &+& x_3 &=& 6 \cr \cr \dfrac{5}{6}x_1 &+& \dfrac{1}{3}x_2 &-& \dfrac{1}{3}x_3 &=& 2 \cr \cr & & -\dfrac{4}{3}x_2 &-& \dfrac{5}{3}x_3 &=& -3 \end{array}