What is the LCM of 11 and 55?

What's the Least Common Multiple (LCM) of 11 and 55?

Answer

LCM of 11 and 55 is

55

First common multiples: 55, 110, 165, …

As a common denominator: multiply the top and bottom of x/11 by 5.

11 divides 55 (55 ÷ 11 = 5), so the LCM is the larger number itself.

11 — prime

55 = 5 × 11

Prime	11	55	Highest power
5	—	5	5
11	11	11	11

— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.

LCM = 5 × 11 = 55

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