Best Answer

There is none. A least common denominator is to be found between or among fractions. 3 and 7 are not fractions.

Q: What is the least common denominator for 3 and 7?

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84/14 = 6 84/7 = 12 84/3 = 28 Hence 84 is the least common denominator

It is: 42

105

40

210

Related questions

The Least Common Denominator of 3/4 and 7/8 is 8.

84/14 = 6 84/7 = 12 84/3 = 28 Hence 84 is the least common denominator

1

21

It is: 42

105

The least common denominator is 28.

Least common denominator of 7 and 5 is 35.

It is: 84

42

40

210