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.
Entering Formulas. 1  1. Select the cell you want to enter the formula in. 2  2. Type an equal sign the cell or in the formula bar. 3  3. Type an open parenthesis if necessary.  4. Create a cell 1  reference. 5. Enter a mathematical, comparison, text, or reference operator if desired.  6. Repeat the previous 3 steps as necessary to build your formula.