Fitting of Linear Equation Through Excel Solver Add in

Adding the Solver Add-In to Microsoft Excel allows you to perform optimization tasks, such as finding the maximum or minimum value of a cell by changing other cells. Here's how to add the Solver Add-In:
Open Excel: Launch Microsoft Excel on your computer.
Go to the "File" tab: Click on the "File" tab in the top-left corner of the Excel window.
Select "Options": In the File menu, select "Options" from the list. This will open the Excel Options dialog box.
Navigate to "Add-Ins": In the Excel Options dialog box, find and click on the "Add-Ins" tab on the left sidebar.
Click "Go" next to "Manage: Excel Add-ins": At the bottom of the Add-Ins tab, you'll see a dropdown menu labeled "Manage". Select "Excel Add-ins" from the dropdown menu and click the "Go" button next to it.
Check "Solver Add-In": In the Add-Ins dialog box that appears, you'll see a list of available Add-Ins. Find "Solver Add-In" in the list and check the box next to it.
Click "OK": Once you've checked the box next to "Solver Add-In", click the "OK" button. Excel will add the Solver Add-In and it will be available for use.
Locate the Solver: After adding the Solver Add-In, you can find it in the "Data" tab in the Excel ribbon. Look for the "Solver" button in the "Analysis" group.
Now, you can use the Solver Add-In to perform optimization tasks in Excel.