There is none. A least common denominator is to be found between or among fractions. 3 and 7 are not fractions.
84/14 = 6 84/7 = 12 84/3 = 28 Hence 84 is the least common denominator
105
It is: 42
210
40
The Least Common Denominator of 3/4 and 7/8 is 8.
The least common denominator of fractions is the smallest multiple of the denominators that they both share. To find the least common denominator of 2/3 and 7/12, you need to find the least common multiple of 3 and 12, which is 12. Therefore, the least common denominator of 2/3 and 7/12 is 12.
84/14 = 6 84/7 = 12 84/3 = 28 Hence 84 is the least common denominator
1
21
105
It is: 42
The least common denominator is 28.
Least common denominator of 7 and 5 is 35.
It is: 84
42
210