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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.

Subtracting fractions with unlike denominators (practice) | Khan ...

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

Practice subtracting fractions that have different denominators.

Example of subtracting fractions with unlike denominators | Addition ...

www.khanacademy.org/math/in-seventh-grade-math/rational-numbers/copy-of-addition-subtraction-fractions/v/subtracting-fractions-with-unlike-denominators

If you conquered adding fractions with different denominators, then subtracting fractions will be a snap. Don't worry...we'll take it slow and explain every step.

Subtracting Fractions - Math is Fun

www.mathsisfun.com/fractions_subtraction.html

There are 3 simple steps to subtract fractions. Step 1. Make sure the bottom numbers (the denominators) are the same; Step 2. Subtract the top numbers (the  ...

Fractions Calculator - Calculator Soup

www.calculatorsoup.com/calculators/math/fractions.php

Fraction calculator to add, subtract, multiply, divide and reduce fractions and mixed numbers to lowest terms. Fraction calculator for adding, subtracting, ...

Subtract Two Fractions - WebMath

www.webmath.com/subfract.html

This page will show you how to subtract fractions. Choose the form that best matches your problem, and fill in it. Only fill in one of the three forms, please.

Subtracting Fractions Worksheets - Math Worksheets 4 Kids

www.mathworksheets4kids.com/fraction-subtraction.php

Fraction subtraction worksheets are based on subtracting mixed numbers, proper and improper fractions with like or unlike denominators and more.

Subtracting Fractions | MathPlayground.com

www.mathplayground.com/fractions_sub.html

Practice subtracting fractions at MathPlayground.com!

Fractions Worksheets | Subtracting Fractions Worksheets - Math-Aids

www.math-aids.com/Fractions/Subtracting_Fractions.html

This fraction worksheet is great for testing children and providing more practice in subtracting fractions. The worksheets may be selected for five different ...

www.ask.com/youtube?q=Subtracting Fractions&v=1xsKnSoTAJA
Feb 12, 2014 ... Subtracting Fractions with different denominators can be done mentally both accurately and rapidly using this cool math trick. The way to minus ...