The common multiples of 9 and 21 are 63, 126, 189 and so on.
Any pair of numbers has an infinite set of common multiples. The lowest common multiple of 9 and 21 is 63 and the others are multiples of this, e.g. 63, 126, 189, 252, 315, ...
63
there are infinite amount of common multiples.
Common multiples of 9 and 10 are all of the multiples of 90.
Common multiples are multiples that are common to two or more numbers.9: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135, 144, 153, 162, 171, 180, 18921: 21, 42, 63, 84, 105, 126, 147, 168, 189The first 3 common multiples of 9 and 21 are 63, 126 and 189.63, 126, 189.
The common multiples of 9 and 21 are 63, 126, 189 and so on.
6363
Any pair of numbers has an infinite set of common multiples. The lowest common multiple of 9 and 21 is 63 and the others are multiples of this, e.g. 63, 126, 189, 252, 315, ...
126
The LCM is 63.
The LCM is 63
63.
Their lowest common multiple is 63.
63
It is: 126
63, 126, 189
315