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Maths Exercices
Adding and subtracting fractions
  • Adding and subtracting fractions with the same denominator
    You can add and subtract like fractions easily - simply add or subtract the numerators and write the sum over the common denominator.

  • Adding and subtracting fractions with different denominator
    Before you can add or subtract fractions with different denominators, you must first find equivalent fractions with the same denominator, like this:
    1. Find the smallest multiple (LCM) of both numbers.
    2. Rewrite the fractions as equivalent fractions with the LCM as the denominator.





Calculate:
Solution (reduce the result):