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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 ...

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

Practice adding fractions that have different denominators.

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

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

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 »

## Adding Fractions - Math is Fun

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)

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

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. 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 »