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When subtracting or adding fractions the denominators must be the same if they are not then the LCM must be found.

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Q: What is the purpose of learning least common multiples?
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Related questions

What do common multiples multiples and least common multiples have in common?

They are all multiples.


What is the least common multiples 12 and 16?

Least common multiples 12 and 16 is 48.


What are the least common multiples of 7 and 14?

The least common multiples of 7 and 14 are 14,28 and 42>


Least common multiples of 6 9?

The least common multiples of the number 6 and 9 is 3.


What are the least common multiples of 5 11 and 13?

The least common multiples of 5, 11, and 13 is 715.


How do you find the most common multiple?

There is no "most common multiple". To find all common multiples, you start by finding the least common multiple. All other common multiples are multiples of this least common multiple.


What are 3 least common multiples of 12 and 35?

3 Least Common Multiples of 12 and 35 are 420, 420 and 420.There is ONLY one Least Common Multiple.The three common multiples of 12 and 35 which are the smallest are the first three multiples of their Least Common Multiple, namely 420, 840 and 1260


What are the least common multiples of 9?

You need at least two numbers to compare multiples.


What are the least common multiples for 6 and 4?

It is 12 and its multiples.


What are two common multiples of 8 and 9?

The common multiples of 9 and 16 are 144, 288, 432 and so on.


What do you call multiples that are shared by two or more numbers?

Those are known as "common multiples". The smallest POSITIVE of these common multiples is called the "least common multiple".


What are the two digit common multiples of 2 8 and 10?

Use some method which you probably already learned, to find the least common multiple. All the other common multiples are multiples of this least common multiple, so you can multiply the least common multiple by 2, by 3, by 4, etc., to get additional common multiples.