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

Updated: 10/25/2022

Wiki User

∙ 14y ago

Best Answer

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.

Wiki User

∙ 7y ago

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Wiki User

∙ 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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Wiki User

∙ 7y 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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Wiki User

∙ 11y ago

84

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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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