Steps

1. Input the fractions as a regular formula in individual cells. Excel will automatically convert it to decimal format. For example =1/2 will yield 0.5 in a cell.
2. Subtract the numbers using cell reference separated by - symbol. Again Excel will convert it into a decimal formal.
3. Select the cells where you want to convert to fraction format, then format cells (can be accessed by either right-clicking or from the ribbon menu). A small window will pop out, then select 'Number' tab, choose 'Fraction' and press 'OK'.

Watch the screen recording below for demonstration.

You might also want to learn how to divide fractions, see our next tutorial.