MMDCCVIII446

2022-02-04

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

Belen Hebert

Beginner2022-02-05Added 8 answers

Step 1

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

$4:\text{}4,8,12,16,20,24,28,32,36,40,44,48,52,56\cdots$

$7:\text{}7,14,21,28,35,42,49,56,63,70,77\cdots$

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 would have in common.

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

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 would have in common.

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