I need to find the least common factor of 36, 48, and 60. I don't understand how I am suppost to do that without a lot of multiplying and dividing.
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Each of these is a multiple of 12, so, to simplify the problem we just write the multiples: 3, 4, 5. The LCM of these is 3×4×5=60, because 3, 4, 5 have no common factors. Now we simply bring in the 12 and multiply by 60=720.

So the LCM of 36, 48, 60 is 720.

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