Example: For subtracting the fractions 10/15 and 1/5, you must first modify the fractions so that the denominators are the same. For these two fractions, the result would be 10/15 and 3/15.
The second step is to subtract the numerators of the two fractions to find the numerator of the answer,
10 - 3 = 7.
The difference is 7/15