LCD means lowest (or least) common denominator, and that implies there must be at least two fractions involved for something to be common to both of them. There is, therefore, no sensible answer to this question.
80
15
The LCM is: 240
Answer: 14 & 15
LCD(9, 15) = 45
LCD(15, 26) = 390
LCD(15, 7, 8) = 840.
15
LCD refers to integers. The LCD of 15 and 23 is 345
The LCD of x, 5, 7, 15 is 105x.
The LCD of 13, 14 and 15 is 2730 The LCD of 1/3, 1/4 and 1/5 is 60
15