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To find common multiples you first need to break up the numbers into their prime factors. In this case:

4=2x2

9=3x3

12=2x2x3

The next step is to identify common factors and discard the duplicates. Two numbers have two 2s so we can discard two of these. Also, two numbers have a 3, so we can discard 1 of these. That leaves us with 2, 2, 3 and 3. Multiply these together for the LCM:

2x2x3x3 = 36

To find other multiples, you simply multiply the LCM by 1,2,3 etc.

So the first three common multiples are 36, 72 and 108.

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so 4,8,12,16,20,24,28,32,36 and the multiples of 12,are 12,24,36 so the first three multiples of 4 and 12 are 12,24 ,36

36, 72, 108, 144

36, 72 and 108

Any multiple of 72.

36, 72, 108

Q: What are the common multiples of 8 9 and 12?

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24, 48, 72, 96, 120

8 and 9 are corpime, so their first common multiple is their product. The next common multiples are simply the multiples of that first multiple.The first three common multiples are therefore 72, 144 and 216.

The common multiples of 9 and 16 are 144, 288, 432 and so on.

36, 72, 108 and so on.

The first thing you should notice is that both 8 and 12 are evenly divisible by 2. This means that any common multiples of 8 and 12 will also be multiples of 2. So we only really need to find the first three common multiples of 8 and 12.First common multiple: 248 * 3 = 2412 * 2 = 24(2 * 12 = 24)Second common multiple: 488 * 6 = 4812 * 4 = 48(2 * 24 = 48)Second common multiple: 728 * 9 = 7212 * 6 = 72(2 * 36 = 72)

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LCM is 72

Just 72. It was found by multiplying 8 and 9. --------------------------------------- The common multiples of two numbers are the multiples of their lowest common multiple. LCM(8, 9) = 72 The common multiples of 8 and 9 are 72, 144, 216, ... The only common multiples less than 100 are 72 only.

The common multiples of an set of numbers are the multiples of their lowest common multiple. lcm(7, 8, 9) = 504 → the first 3 common multiples of 7, 8, 9 are 504, 1008, 1512.

504 is the least common multiple of 7, 8 and 9. All numbers that are multiples of 504 are multiples of 7, 8 and 9 as well

The LCM of 4, 9, and 12 is 36

The LCM of 9 and 12 is 36

Least Common Multiple (LCM) for 8 9 is 72.

multiples for 3: 3, 6, 9, 12, 15, 18, 21, 24 multiples for 8: 8, 16, 24 The least common multiple is 24

24, 48, 72, 96, 120

8 and 9 are corpime, so their first common multiple is their product. The next common multiples are simply the multiples of that first multiple.The first three common multiples are therefore 72, 144 and 216.

multiples of 4: 4 ,8 ,12, 16, 20, 24, 28, 32, 36 multiples of 9: 9 ,18, 27, 36 So the lowest common multiple is 36

The common multiples of 9 and 12 are 36, 72, 108, 144, 180, 216, 252, 288, 324, 360, and so on. They are the infinite set of multiples of the LCM of 9 and 12, which is 36.