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To find the common multiples of two numbers you first need to express them as the product of their prime factors:

8 = 2x2x2

12 = 2x2x3

The next step is to identify any common primes. In this case, both numbers have two 2s as prime factors, so we can discard 2 of these. That leaves us with 2, 2, 2 and 3. Multiply these together to get the LCM:

2x2x2x3 = 24. To find the other common multiples, you simply times this LCM by any integer. That gives us 4 common multiples between 1 and 100. They are:

24, 48, 72, 96.

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13y ago

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