(LCM) of 28, 42 and 63

Question

asked Jan 13, 2023 88.8k views

2 Answers

Caleb Gates · Answer 1 · 2023-01-14T14:35:12+0000

Answer:

LCM = 252.

Explanation:

First find their prime factors:

28 = 2*2*7

42 = 2*3*7

63 = 3*3*7

So, only including like factors once, LCM =

2*2*3*3*7

= 252

ShevaKuilin · Answer 2 · 2023-01-20T05:48:54+0000

Answer:

252

Explanation:

The least common multiple is the product of all factors in the greatest number of their occurrence.

LCM = 2 x 2 x 3 x 3 x 7

LCM = 2^2 x 3^2 x 7

LCM = 252

The least common multiple of 28, 42 and 63 is 252.