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The least common multiple is the smallest number that is multiple of two or more numbers.

21: 21, 42, 63, 84

28: 28, 56, 84

The LCM of 21 and 28 is 84.

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8y ago
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14y ago

We can obviously see that the 2 elementary numbers are divisible by 7, therefore, the LCM is 21/7 * 28/7 * 7 = 3 * 4 * 7 = 12 * 7 = 84.

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8y ago

The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question! The least multiple of a number is itself.

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12y ago

84

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Q: What is the least common multiple of 21 and and 28?
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What is the least common multiple of 28 14 21?

The Least Common Multiple (LCM) for 28 14 21 is 84.


What is the least common multiple of 28 7 and 21?

The Least Common Multiple (LCM) for 21 28 7 is 84.


What are the least common multiple of 21 28 42?

Least Common Multiple is 84


What is the least common multiple of 21 28 49?

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What is the least common multiple of 8 21 and 28?

LCM(8, 21, 28) = 168

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The Least Common Multiple (LCM) for 28 21 56 is 168.


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What is the least common multiple of 14 21 and 28?

The least common multiple (LCM) is often also called the lowest common multiple or smallest common multiple. Keep in mind that these different terms all refer to the same thing: the smallest positive integer which is a multiple of two or more numbers.The least common multiple of 14, 21, and 28 is 84.


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