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To add or subtract fractions, they must have the same denominator. If they do not, make the least common multiple of all of the denominators the new denominator. After adding or subtracting, reduce your answer.
When giving the fractions like denominators, whatever number you multiply the old denominator of a fraction by, you must also multiply it by the numerator.

Practice adding fractions that have different denominators.

[Voiceover] Let's say that we have the fraction 9/10, and I want to add to that the fraction 1/6. What is this, what is this going to equal? So when you first look at ...

This prealgebra lesson explains how to add and subtract fractions when the denominators are different.

May 2, 2012 ... Adding fractions with different denominators, step by step, examples. For more free math videos visit http://MathMeeting.com.

Fun math practice! Improve your skills with free problems in 'Add fractions with unlike denominators' and thousands of other practice lessons.

Aug 15, 2017 ... Master this simple trick for adding fractions with different or unlike denominators.