416,196 views
5 votes
5 votes
Find The greatest common Factor of 7, 15, 21

User Meital
by
2.8k points

2 Answers

16 votes
16 votes

Answer:

1

Explanation:

User Fede
by
2.3k points
25 votes
25 votes

Answer:

1

Explanation:

1. List the prime factors of each number.

2. Circle every common prime factor — that is, every prime factor that's a factor of every number in the set.

3. Multiply all the circled numbers. The result is the GCF.

User Michael Kirkham
by
3.1k points