Update README.md

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

Author: FabianaCampanari

README.md

@@ -239,6 +239,11 @@ The **graphical method** for solving simple linear programming (LP) problems inv
 - **[Optimal Solution]():** A feasible solution that yields the best (maximum for maximization problems, minimum for minimization problems) value of the objective function.
 
 
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+## Steps to Solve Graphically
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