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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.

www.khanacademy.org/math/arithmetic/fraction-arithmetic/arith-review-add-sub-fractions/e/adding_fractions

Practice adding fractions that have different denominators.

www.khanacademy.org/math/arithmetic/fraction-arithmetic/arith-review-add-sub-fractions/v/adding-small-fractions-with-unlike-denominators

The denominator of a fraction tells you the "size" of 1 piece, or how many pieces make up 1 whole unit. To add/subtract fractions, we need to have a common ...

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

How to Add and Subtract Fractions When the Denominators are Different. This is a bit tricky, but you'll think it's easy once you get used to it! Let's try this: 1/2 + 1/3.

.ask.com/youtube?q=Adding+Fractions+with+Unlike+Denominators&v=RIhwfqULbAE
May 2, 2012 ... Adding fractions with different denominators, step by step, examples. For more free math videos visit http://MathMeeting.com.

www.ixl.com/math/grade-5/add-fractions-with-unlike-denominators

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

.ask.com/youtube?q=Adding+Fractions+with+Unlike+Denominators&v=MEo0rSZ4O3w
Oct 17, 2007 ... Learn how to add fractions with unlike denominators, including how to find the LCD. Watch my latest video here: http://tinyurl.com/qe24bsy.

www.wikihow.com/Add-Fractions-With-Unlike-Denominators

This can become even more complex when the fractions have different denominators, or bottom numbers. Still, adding fractions with unlike denominators is ...

learnzillion.com/lesson_plans/6861-add-fractions-with-unlike-denominators-by-creating-area-models

In this lesson you will learn how to add fractions with unlike denominators by creating area models.

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

In this lesson you will learn how to add and subtract fractions with unlike denominators.