Update README.md

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

Author: FabianaCampanari

README.md

@@ -811,7 +811,7 @@ x_1 + 3x_2 = 7$
    - If $x_2 = 0 \Rightarrow x_1 = 7
 ```
   
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+<br><br>
 
 [2](). $2x_1 + 2x_2 = 8$
    - If $x_1 = 0 \Rightarrow x_2 = 4$
@@ -825,7 +825,7 @@ x_1 + 2x_2 = 8$
    - If $x_2 = 0 \Rightarrow x_1 = 4$
 ```
 
-<br>
+<br><br>