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The first step is to break the numbers down into their prime factors:

18 = 2x3x3

5 = 5

The next step would be to identify any common factors. In this case, there are none. Thus we simply multiply all the factors together:

2x3x3x5 = 90

And so the LCM of 18 and 5 is 90.

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12y ago
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11y ago

The Least Common Multiple (LCM) for 7 9 18 is 126.

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Wiki User

8y ago

90

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8y ago

45

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6y ago

LCM = 90

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6y ago

180

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Q: What is the LCM of 5 9 18?
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