The least common multiple (LCM) of two numbers is the smallest positive rational number (not zero) that is a multiple of both.
Multiples of 14 are:
14, 28, 42, 56, etc.
Multiples of 21 are:
21, 42, 63,etc.
The least common multiple of 14 and21 is the smallest one of those: 42
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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.
The Least Common Multiple (LCM) for 27 21 is 189.
The least common multiple of 7 , 9 , 21 = 63
Least common multiple of 5 6 and 21 is 210.
The LCM of 15 and 21 is 105.The Least Common Multiple (LCM) for 15 21 is 105.