diff --git a/ex07/kn07.pdf b/ex07/kn07.pdf
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+++ b/ex07/kn07.pdf
Binary files differ
diff --git a/ex07/kn07.tex b/ex07/kn07.tex
index d9fee73..e8883ac 100644
--- a/ex07/kn07.tex
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@@ -113,5 +113,12 @@
 \begin{enumerate}
     \item $\frac{64kbit/s}{256bit/s}=25$ messages can be transmitted according to the bandwidth. The maximum of thoughput we reach at $G=0.5$, so the maximum number of terminals is $x^*=\left\lfloor\frac{25}{2}\right\rfloor=12$.
     \item For Slotted ALOHA the maximum is at $G=1$, so the best number of terminals is $x'^*=25$
+    \item The formula is $x^*=\left\lfloor\frac{N}{2tm}\right\rfloor$, where $m$ is the message size, $t$ the messages per second. This leads to:
+    \begin{enumerate}
+        \item doubling $t$ halves $x^*$
+        \item doubling $m$ halves $x^*$
+        \item doubling $N$ doubles $x^*$
+    \end{enumerate}
+    All those with the limitation of the floor-function so only approximately.
 \end{enumerate}
 \end{document}