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Lowest Common Denominator Subtracting Fractions MathHelpcom
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Need a custom math course? Visit https://www.MathHelp.com. • This lesson covers subtracting fractions using the lowest common denominator. Students learn to subtract unlike fractions by first finding a common denominator. For example, to subtract 7/12 - 1/3, first find the common denominator of 12 and 3, or the Least Common Multiple of 12 and 3, which is 12. Then multiply the numerator and denominator of 1/3 by 4, to get the equivalent fraction 4/12. Next, subtract the like fractions, 7/12 + 4/12, to get 3/12. Finally, reduce 3/12 to 1/4.
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