=SUM(I7:I12)-H15
The formula bar.
You can subtract with a standard subtraction formula, using the minus sign. You can use actual values, like this: =25 - 6 More commonly you put the values into cells, and use the cell references in the formula to get something like: =A2 - A3 In that case, linking it to the first formula, the 25 could be in cell A2 and the 6 in cell A3.
first
In Excel an equation can be a formula. All formulas in Excel must start with the equals sign. That is what tells Excel it is a formula.
formula
AT1-AN1 means to subtract the contents of the cell AN1 from AT1, but I am not aware of any specific meaning of AT-AN in Excel.
A green arrow in the corner of an excel cell means that excel suspects soemthing may be wrong with the formula in a particular cell.
All formulas must begin with the equals sign. That is how Excel knows it is a formula.
A formula.
The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.The #REF error in Excel indicates that Excel is trying to reference a cell that does not exist. It often happens when rows or columns or removed, or cells are deleted completely, leaving the formula unable to find the cell that it is trying to reference. You will see it in place of a cell in the middle of a formula, indicating the cell it cannot find.
Formulas go into cells. You can type them directly into a cell or on the formula bar, which will then enter it into the selected cell.
You place your cursor in the cell, and delete the formula.