All multiples of 840 are common multiples of 60 and 280
The multiples of 60 include 60, 120 and 180. For them to be common, they need to be compared to another set of multiples.
Common multiples of 14 and 20 include 140, 280 and 420
All of the multiples of 280 are. There are an infinite number of them.
The LCM is: 280
Any multiple of 280.
60 and 42 have no common multiples under 100.
All common multiples of 7, 10 and 8 are divisible by them. The lowest common multiple of them is 280, so all multiples of 280 are divisible by them, namely 280, 560, 840, 1120, ...
what has the common multiples 25 95
140, 280, 420 and so on.
28, 280, 2800
Any multiple of 280.
60 and the infinitely many multiples of 60.