What is the LCM of 7 and 14?

What's the Least Common Multiple (LCM) of 7 and 14?

Answer

LCM of 7 and 14 is

14

First common multiples: 14, 28, 42, …

As a common denominator: multiply the top and bottom of x/7 by 2.

7 divides 14 (14 ÷ 7 = 2), so the LCM is the larger number itself.

7 — prime

14 = 2 × 7

Prime	7	14	Highest power
2	—	2	2
7	7	7	7

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

LCM = 2 × 7 = 14

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