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LCM = 270


Looking at the prime factors of each number makes this problem easier to solve:
27 = 33
45 = 32 x 5
10 = 2 x 5

Since 27 and 10 don't have any common factors, you know the LCM will be a multiple of 27 x 10 =270.

A simple check shows you that 45 goes into 270 so that is your answer.

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15y ago

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