14 and 21
126
The Least Common Multiple (LCM) for 8 9 14 is 504.
630, 1260, 1890 and so on.
since 9 is divisible only by 1,9, and 3 and 14 is divisible by 1,2,7,and 14....9/14 is the lowest form because neither of its multiples match
126, 252, 378
There is an infinite number of common multiples for 9 and 14. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder).
Some of the multiples of 14 are the same as the multiples of 16, but not all of them.
126, 252, 378
If that's 9, 14 and 21, the first three common multiples are 126, 252 and 378.
9 multiples
14 has an infinite number of multiples.