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www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/v/adding-fractions-with-unlike-denominators

www.coolmath.com/prealgebra/01-fractions/fractions-12-adding-subtracting-different-denominators-01

This prealgebra lesson explains how to

www.helpwithfractions.com/adding-fractions-different-denominators/

Nov 3, 2014

www.ask.com/youtube?q=Adding Fractions with Unlike Denominators&v=lKiR4BBt6TE

Sep 21, 2011 ... Add Fractions ! Printable worksheet here: https://docs.google.com/document/d/17t
-zMu-Y23tlErj9vzD7KKITwLHNyyuCVdXkdZdxgtI/edit This ...

www.sheppardsoftware.com/mathgames/fractions/mathman_fractions_add_uncommon.htm

www.mathplayground.com/howto_fractions_diffden.html

Math video teaches students how to

learnzillion.com/lesson_plans/8178-add-and-subtract-fractions-with-unlike-denominators

In this lesson you will learn how to

www.dummies.com/how-to/content/how-to-add-fractions-with-different-denominators.html

When the

www.calculatorsoup.com/calculators/math/adding-fractions-calculator.php

Calculator for adding fractions with like denominators and

www.aaamath.com/fra66kx2.htm

An interactive math lesson about

Answer

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.

Sources:

See Also:
Least Common Denominators

More Info

www.khanacademy.org

Practice

www.ixl.com

Fun math practice! Improve your skills with free problems in '

www.mathplayground.com

D.