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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.

Sources:

See Also:
Least Common Denominators

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

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

Practice

www.mathsisfun.com/fractions_subtraction.html

There are 3 simple steps to

www.webmath.com/subfract.html

This page will show you

www.ask.com/youtube?q=How to Subtract 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 ...

www.ask.com/youtube?q=How to Subtract Fractions?&v=PvD_I8tnOV4

Jan 13, 2011 ... Check out Bas Rutten's Liver Shot on MMA Surge: http://bit.ly/MMASurgeEp1
Mahalo math expert Julie Clark explains how to subtract fractions .

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

Sep 2, 2014

www.math.com/school/subject1/lessons/S1U4L3GL.html

Like

www.mathplayground.com/fractions_sub.html

Practice