Step 1: Confirm denominators are common

Check the fractions’ denominators are the same.

Step 2: Add the numerators directly

As the fractions have the same denominators, you can add them directly. The denominator remains the same with that of the given fractions.

Step 3: Simplify the fraction with a common factor

If you can, divide both the numerator and denominator by the common factor.

Examples on adding fractions with common denominators

Q1) Find the sum of the following sets of fractions:


Add the numerators and write down the common denominator.


Simplify the sum by finding the common factors.