Update README.md

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

Author: FabianaCampanari

README.md

@@ -997,8 +997,8 @@ Intersection of x_1 + 3x_2 = 7 and 2x_1 + 2x_2 = 8:
 <br>
 
 ```latex
-- **Optimal solution:** $x_1 = 3$, $x_2 = 0$
-- **Maximum value:** $Z = 12$
+- **Optimal solution:** x_1 = 3$, $x_2 = 0
+- **Maximum value:** Z = 12
 ```
 
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