When you have kidney disease, your kidneys are no longer able to remove waste effectively from your body or to balance your fluids. The build up of wastes can change the chemistry of your body causing some symptoms that you can feel, and others that you don't.
Reference to a range of cells is typically of the form (A1:A6), which specifies all the cells in the range A1 through to A6. A formula such as =SUM(A1:A6) would add all the cells specified and put the result in the cell containing the formula itself.
On a worksheet, click the cell in which you want to enter the formula. To start the formula, type =. To enter the first numeric value, do one of the following: Type the value that you want to use. Tip For example, type 10. Select the cell that contains the value that you want to use. Tip For example, select cell A1.se the SUM function to total numeric values in a column or row. To calculate the total of a series of numeric values in a row or column, you do not have to enter all those values manually into a formula.