What is the LCM of 7 and 49?

What's the Least Common Multiple (LCM) of 7 and 49?

Answer

LCM of 7 and 49 is

49

First common multiples: 49, 98, 147, …

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

7 divides 49 (49 ÷ 7 = 7), so the LCM is the larger number itself.

7 — prime

49 = 7²

Prime	7	49	Highest power
7	7	7²	7²

LCM = 7² = 49

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