Update README.md

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

Author: FabianaCampanari

README.md

@@ -587,7 +587,7 @@ $$
 ### **3.** Solve the following linear programming problem using the Simplex method.:
 
 $$
- \[
+\
 \begin{aligned}
 \text{Max.} \quad & Z = 4x_1 + 3x_2 \\
 \text{S.a.} \quad & 
@@ -599,7 +599,7 @@ x_2 \leq 2 \\
 x_1 \geq 0 \text{ e } x_2 \geq 0
 \end{cases}
 \end{aligned}
-\]
+\
 SS