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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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13y ago
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12y ago

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

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10y ago

36, 72, 108, 144

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12y ago

36, 72 and 108

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7y ago

Any multiple of 72.

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7y ago

36, 72, 108

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

LCM is 72


What are all the common multiples of 8 and 9 that are less than 100 and how?

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.


What are the first 3 common multiples of 7 8 and 9?

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.


What is the common multiple of 7 8 and 9?

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


What are the common multiples of 4 9 and 12?

The LCM of 4, 9, and 12 is 36


What are the common multiples of nine and 12?

The LCM of 9 and 12 is 36


What are the multiples of 5 8 and 12?

24, 48, 72, 96, 120


What are the three lowest common multiples of 8 and 9?

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


What is LCM of 3 and 8?

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


What are the common multiples of 8 and 9?

The common multiples of 8 and 9 are numbers that are divisible by both 8 and 9. To find the common multiples, you can list out the multiples of each number and identify the numbers that appear in both lists. The common multiples of 8 and 9 include 72, 144, 216, and so on, as these numbers are divisible by both 8 and 9.


What are the first three common multiples of three eight and nine?

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.


What's the least common multiple of 4 and 9?

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