are 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
Before you can
add or subtract fractions with different denominators, you must first find
equivalent fractions with the same denominator, like this:
- Find the
smallest multiple (LCM) of both numbers.
- Rewrite the
fractions as equivalent fractions with the LCM as the denominator.
with fractions, the LCM is called the least common denominator (LCD). Click
on the examples below.