diff --git a/4-4.pdf b/4-4.pdf
index 9c2ecf7..d553b2a 100644
Binary files a/4-4.pdf and b/4-4.pdf differ
diff --git a/4-4.tex b/4-4.tex
index eabd25e..dc10f54 100644
--- a/4-4.tex
+++ b/4-4.tex
@@ -348,5 +348,33 @@ I:&&x_1-p&=0&&|+p\\
 &&&&\mathbb{L}&=\{(p,-p,0,p,-p)|p\in\mathbb{R}\}
 \end{align}
 \end{enumerate}
+\subsection*{Aufgabe 4}
+\begin{enumerate}[label=\alph*)]
+\item $8*$II
+$\left(\begin{matrix}
+8&-1&1\\
+-8&16&104
+\end{matrix}\right)$
+I zu II add
+$\left(\begin{matrix}
+8&-1&1\\
+0&15&105
+\end{matrix}\right)$
+\begin{tabular}{c}
+I/8\\
+II/15
+\end{tabular}
+$\left(\begin{matrix}
+1&\frac{-1}{8}&\frac{1}{8}\\
+0&1&7
+\end{matrix}\right)$
+ $\frac{1}{8}$II zu I
+$\left(\begin{matrix}
+1&0&1\\
+0&1&7
+\end{matrix}\right)$
 
+$\mathbb{L}=\{(1,7)\}$
+\item $\mathbb{L}=\{(1,1,1)\}$
+\end{enumerate}
 \end{document}
\ No newline at end of file