The least common denominator of 3 and 13 is 39.
120.
15
The numbers 7, 3, and 2 share no common denominator. They are prime numbers.
1 is the only common denominator.
I suggest you do the following: 1) Find a common denominator of 5 and 7. (It need not be the least common denominator; multiplying the two denominators works for our purposes.) 2) Convert both fractions to equivalent fractions with this denominator. 3) Compare the numerators of the fractions thus converted.
lcm(3, 13) = 39.
It is: 195
The least common denominator is 3x.
The LCD of 4/5 and 1/3 is 15.
The LCD of 1/3 and 1/9 is 9.
What is the least denominator of 2 and 3
Least common multiple is 429 39 = 3 x 13 33 = 3 x 11 Thus the LCM is 3 x 11 x 13 = 429
The Least Common Denominator of 3/4 and 7/8 is 8.
2/3 and 3/4 Least Common Denominator is 12
A common denominator, though the least, is 240.
A common denominator, though not the least, is 30.
There is none. A least common denominator is to be found between or among fractions. 3 and 7 are not fractions.