Update README.md

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

Author: FabianaCampanari

README.md

@@ -1233,7 +1233,8 @@ Intersection of x_1 + 3x_2 = 7 and 2x_1 + 2x_2 = 8:
 
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-### [2](). Intersection of $x_1 + 3x_2 = 7$ and $x_1 + x_2 = 3$:
+### [2](). [Intersection of](): $x_1 + 3x_2 = 7$ and $x_1 + x_2 = 3$:
+
    - Subtract: $2x_2 = 4 \Rightarrow x_2 = 2$, $x_1 = 1$
    - Point: **(1, 2)**