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The multiplication table for 3 produces 3,6,9,12,15,18,21,24, and 27, etc. etc.

The multiplication table for 9 produces9,18,27,36,45, etc.

So you can see that the lowest number which you can find in both tables that the numbers 6 and 9 divide into is18, so that is the LCM of those two numbers.

LCM means Lowest Common Multiple.

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13y ago
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9y ago

2 x 3 = 6

3 x 3 = 9

2 x 3 x 3 = 18, the LCM

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Q: What is the lcm of 6 and 9 using prime factoring?
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