Update README.md

Signed-off-by: Fabiana  🧬 Campanari <113218619+FabianaCampanari@users.noreply.github.com>

Author: FabianaCampanari

README.md

@@ -652,24 +652,15 @@ y \geq 0
 \end{cases}
 $$
 
+<br>
 
 ```latex
-\[
-\begin{aligned}
-&\text{Maximize:} \\
-&\quad Z = 40x + 30y \\
-&\text{Subject to:} \\
-&\quad
-\left\{
-\begin{array}{rl}
-2x + y &\leq 40 \\
-x + 2y &\leq 50 \\
-x &\geq 0 \\
-y &\geq 0 \\
-\end{array}
-\right.
-\end{aligned}
-\]
+\begin{cases}
+2x + y \leq 40 \\
+x + 2y \leq 50 \\
+x \geq 0 \\
+y \geq 0
+\end{cases}
 ```
 
 <br>