Update README.md

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

Author: FabianaCampanari

README.md

@@ -868,7 +868,7 @@ x_1 \geq 0$ and $x_2 \geq 0
 
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-1. Intersection of $x_1 + 3x_2 = 7$ and $2x_1 + 2x_2 = 8$:
+###b [1](). Intersection of $x_1 + 3x_2 = 7$ and $2x_1 + 2x_2 = 8$:
    - Multiply first by 2: $2x_1 + 6x_2 = 14$
    - Subtract: $4x_2 = 6 \Rightarrow x_2 = 1.5$, $x_1 = 2.5$
    - Point: **(2.5, 1.5)**