TeX Quellcode:

\vec{a} = \begin{pmatrix}-18-\left(-11\right) \cr \frac{16}{5}-\frac{11}{5} \cr -\frac{17}{2}-\left(-7\right)\end{pmatrix} = \begin{pmatrix}-7 \cr 1 \cr -\frac{3}{2}\end{pmatrix}