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3 votes
Least common multiple of 7 and 21

User Kronion
by
8.0k points

2 Answers

2 votes

Answer:

21

Explanation:

Since 7 x 3 is 21

And 21 x 1 is 21

User Ian Lyttle
by
7.6k points
3 votes

Answer:

21

Explanation:

To find the least common multiple of 7 and 21 , we need to break each number down to its prime factors

7 = 7

21 = 7*3

To find the least common multiple multiply each factor the greatest number of times it occurs in either number.

The LCM = 7*3

= 21

User Steve Brisk
by
8.0k points

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