Update README.md

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

Author: FabianaCampanari

README.md

@@ -2287,20 +2287,24 @@ In cell **K2**, enter:
 =SUMPRODUCT(B2:D4, G2:I4)
 ```
 
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 This formula multiplies each assignment by its cost and sums the total.
 
 
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-#### [.4](): Add Row and Column Sums for Constraints
+#### [1.4](): Add Row and Column Sums for Constraints
 
 #### [Row Sums]() (Each Task Assigned Once):
 
 - In **J2**: `=SUM(G2:I2)`
 - In **J3**: `=SUM(G3:I3)`
 - In **J4**: `=SUM(G4:I4)`
 
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 #### [Column Sums]() (Each Machine Assigned Once):
 
 - In **G5**: `=SUM(G2:G4)`
@@ -2312,17 +2316,24 @@ This formula multiplies each assignment by its cost and sums the total.
 
 ### [Step 2](): Configure Excel Solver
 
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 1. **Go to**: Data > Solver
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 2. **Set Objective**:  
    - Set **K2** (total cost) to **Minimize**.
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 3. **By Changing Variable Cells**:  
    - Select **G2:I4**.
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 4. **Add Constraints**:
    - **J2:J4 = 1** (each task assigned once)
    - **G5:I5 = 1** (each machine assigned once)
    - **G2:I4 = binary** (only 0 or 1 allowed)
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 5. **Choose Solving Method**:  
    - Use "Simplex LP" or "GRG Nonlinear" (either works for this size).
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 6. **Click Solve**.
 
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