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How to add two fractions when the denominators are not the same

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How to add two fractions when the denominators are not the same

194,994 views October 26, 2014 2:33

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ChannelBrian McLogan

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👉 Learn how to add and subtract fractions whose denominators are not the same. Recall that when we want to add or subtract fractions having the same denominator, we add the numerators and retain the (common) denominator. This is different when the fractions have different denominators. When adding fractions with different denominators, we convert the fractions to equivalent fractions having the same denominator. This is achieved by finding the LCM of the different denominators (the least number that the denominators can divide without remainder). We then multiply the denominators by a number which will yield the LCM. You will also multiply the numerator by the same number with which you multiplied the denominator. Notice now that the fractions have the same denominator. We can now add or subtract the numerators retaining the common denominator.

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About this tutorial

Brian McLogan published this 2:33 video tutorial on October 26, 2014. It has been watched 194,994 times on YouTube.

Category
Education
Duration
2:33
Published
October 26, 2014
Views
194,994
Likes
1,615

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Further reading

  • How to Add Fractions with Different Denominators - dummies dummies.com

    Add fractions the traditional way. Use the traditional way only when you can’t use either of the other methods (or when you know the least common multiple (LCM) just by looking at the denominators). Here’s the tradition…

  • Adding Two Fractions with Different Denominators onlinemath4all.com

    If the denominators of the fractions are not co-prime (there is a common divisor other than 1), we have to apply this method. Fro example, let us consider the two fractions 5/12, 1/20. In the above two fractions, denomi…

  • Adding Fractions with Unlike Denominators varsitytutors.com

    Adding Fractions with Unlike Denominators If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM)…

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