diff --git a/src/2026-01-16/presentation.tex b/src/2026-01-16/presentation.tex
index 4c826be..61c768a 100644
--- a/src/2026-01-16/presentation.tex
+++ b/src/2026-01-16/presentation.tex
@@ -147,7 +147,10 @@
             \pause\begin{align*}
                 P_Z(n) &= P_{X+Y}(n) = \nsum_{k=0}^{n} P_X(k)P_Y(n-k)
                 = \nsum_{k=0}^{n} \frac{\lambda_1^k \cdot e^{-\lambda_1}}{k!}
-                    \cdot \frac{\lambda_2^{n-k} \cdot e^{-\lambda_2}}{(n-k)!} \\[1mm]
+                    \cdot \frac{\lambda_2^{n-k} \cdot e^{-\lambda_2}}{(n-k)!}
+            \end{align*}
+            \vspace*{-4mm}
+            \pause\begin{align*}
                 &= e^{-(\lambda_1 + \lambda_2)} \nsum_{k=0}^{n}
                     \frac{1}{k! (n-k)!} \lambda_1^k \lambda_2^{n-k} \\[3mm]
                 &= \frac{e^{-(\lambda_1 + \lambda_2)}}{n!} \nsum_{k=0}^{n}