Inverse Matrix/3x3/3/Aufgabe/Lösung

${}{\begin{pmatrix}1&5&0\\4&4&1\\0&0&5\end{pmatrix}}$	${}{\begin{pmatrix}1&0&0\\0&1&0\\0&0&1\end{pmatrix}}$
${}{\begin{pmatrix}1&5&0\\0&-16&1\\0&0&1\end{pmatrix}}$	${}{\begin{pmatrix}1&0&0\\-4&1&0\\0&0&{\frac {1}{5}}\end{pmatrix}}$
${}{\begin{pmatrix}1&5&0\\0&-16&0\\0&0&1\end{pmatrix}}$	${}{\begin{pmatrix}1&0&0\\-4&1&-{\frac {1}{5}}\\0&0&{\frac {1}{5}}\end{pmatrix}}$
${}{\begin{pmatrix}1&5&0\\0&1&0\\0&0&1\end{pmatrix}}$	${}{\begin{pmatrix}1&0&0\\{\frac {1}{4}}&-{\frac {1}{16}}&{\frac {1}{80}}\\0&0&{\frac {1}{5}}\end{pmatrix}}$
${}{\begin{pmatrix}1&0&0\\0&1&0\\0&0&1\end{pmatrix}}$	${}{\begin{pmatrix}-{\frac {1}{4}}&{\frac {5}{16}}&-{\frac {1}{16}}\\{\frac {1}{4}}&-{\frac {1}{16}}&{\frac {1}{80}}\\0&0&{\frac {1}{5}}\end{pmatrix}}$

Zur gelösten Aufgabe