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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.

How to add fractions that have different denominators | Adding and ...

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

Adding and subtracting fractions with unlike denominators .... In mathematics, the concept of adding and subtracting fractions require the denominator to be ...

Adding fractions with unlike denominators | Khan Academy

www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/e/adding_fractions

Practice adding fractions that have different denominators.

Fractions - Cool math Pre-Algebra Help Lessons - Adding& ...

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

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

math.about.com/od/fractions/ss/denom.htm
Like many other topics in math, there is usually more than one method to get to the desired results. Adding fractions and finding common demoninators is merely another example of this. Multiplying denominators to find common denominators. More »
By Deb Russell, About.com Guide

Adding Fractions - Math is Fun

www.mathsisfun.com/fractions_addition.html

There are 3 Simple Steps to add fractions: Step 1: Make sure the bottom numbers (the denominators) are the same; Step 2: Add the top numbers (the ...

IXL - Add fractions with unlike denominators (5th grade math practice)

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.

Add two fractions together - WebMath

www.webmath.com/addfract.html

This page will show you how to add two fractions together. Fill in one problem type, that matches the fraction addition problem you are trying to do, then click ...

Adding Fractions - Math Playground

www.mathplayground.com/fractions_add.html

www.MathPlayground.com. For fun and educational math games. created by teachers, please visit. A. B. E. F. C. D. Adding Fractions. In this math program, you  ...

Math Video - Adding Fractions with Different Denominators

www.mathplayground.com/howto_fractions_diffden.html

Math video teaches students how to add fractions with different denominators.

Popular Q&A
Q: Math: Adding fractions with negative numbers?
A: Apply LCD method and combine the fractions to get. 4. LCD = 12.-6/12 - 4/12 + 3/12. = -10/12 + 3/12. = -7/12. 4. LCD = 2. (-3 + 6 + 8)/2. = (11)/2. = 11/2. = 5½... Read More »
Source: answers.yahoo.com
Q: A Little Help On My Math Adding Fractions?
A: ok. the simplest form is just the most reduced form possible (basically the simplest form to read). so if your problem is. 2/3+2/3=4/3 you see how many times th... Read More »
Source: answers.yahoo.com
Q: Basic Math. /. adding fractions with different bottom numbers.
A: Hello, Lisa. Let's take an example: 2/9 + 2/6. We have two different denominators, so we need to make them the same. To do this, we need to find a common denomi... Read More »
Source: en.allexperts.com
Q: How do i add the following fraction? Basic Math. /. adding fracti...
A: Hello, Jamie. Thanks for the encouragement! Christ is truly a wonderful Savior! 1/2 + 3/4 + 1/12. To add these fractions, you need to first find the least commo... Read More »
Source: en.allexperts.com
Q: Maths question - adding fractions - ratio?
A: 1/3 + 2/5 = 5/15 + 6/15 = 11/15 (x 5) (x 3) Divide the ratio by 3 to get 1:4 Read More »
Source: uk.answers.yahoo.com