A multiple that is common to two or more numbers.

Example:

The multiples of 3 are: 3, 6, 9, 12,

The multiples of 5 are: 5, 10,

So, a common multiple of 3 and 5 is

Example:

The multiples of 3 are: 3, 6, 9, 12,

**15**, 18, ... etcThe multiples of 5 are: 5, 10,

**15**, 20, 25, ... etcSo, a common multiple of 3 and 5 is

**15**(and 30, 45, etc ..., as well)
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