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The LCM of 4 and 5 is 20.

To find it, you can list the multiples of each number. The first one that the numbers have in common is the Least Common Multiple or LCM.

The multiples of 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, and so on.

The multiples of 5 are 5, 10,15, 20, 25, 30, 35, 40, and so on.

The first multiple that they have in common is 20, so it is the LCM.
20
It is 20
20

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7y ago

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