What is the least common multiple (LCM) of 4 and 7?

1 Answer
Samrin M. ยท Stefan V.
Oct 16, 2017

28

Explanation:

First, write a list of the multiples of each number like so:

4: " "4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56 . . .

7:" " 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77 . . .

Then you find the first number which 4 and 7 have in common. 4 and 7 have 28 and 56 in common BUT the LCM would be 28 since that's the LEAST common, or the smallest number that they would have in common.

Hope this helped!

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