42, 84, 126, 168, 210
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The first five multiples of 14 are: 14, 28, 42, 56, 70.
The first five multiples of 21 are: 21, 42, 63, 84, 105.
21, 42, 63, 84, 105.
the answer i know is 42 and 56 wrong! the multiples of 42 is 42,84,126,168 and etc.
Example: 5 and 7 List the multiples of 5. 5, 10, 15, 20, 25, 30, 35, 40... List the multiples of 7. 7, 14, 21, 28, 35, 42... The LCM is the first number that appears on both lists.