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

They are all multiples.


Common Multiples and Least Common Multiples of 3 and 6?

The Least Common Multiple (LCM) is 6.


What are the common multiples of 4 and 5?

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What are 3 least common multiples of 12 and 35?

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What are two common multiples of 8 and 9?

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