Update README.md

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

Author: FabianaCampanari

README.md

@@ -549,6 +549,35 @@ After running Solver:
 - **Z = 40×10 + 30×20 = 1000**
 
 
+## Extras Excercise
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+<br>
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+### **2.** Solve graphically the LP presented below:
+
+
+$$
+\[
+\begin{aligned}
+\textbf{Max.} \quad & Z = 4x_1 + 3x_2 \\
+\textbf{S.a.} \quad &
+\begin{cases}
+x_1 + 3x_2 \leq 7 \\
+2x_1 + 2x_2 \leq 8 \\
+x_1 + x_2 \leq 3 \\
+x_2 \leq 2 \\
+x_1 \geq 0 \text{ e } x_2 \geq 0
+\end{cases}
+\end{aligned}
+\]
+$$