Best Answer

Find the prime factors of each.

Prime factors of 10 are 2 and 5

Prime factors of 15 are 3 and 5

Multiply one number by the prime factors unique to the other:

10x3 or 15x2

=30

Q: How do you work out the LCM of 10 and 15?

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60 * * * * * Actually, LCM(10, 15) = 30

LCM of 10 and 15 = 30

The LCM of 10 and 15 is 30.

The LCM is 60.

The Least Common Multiple (LCM) for 15 9 10 is 90.

LCM(10, 12, 15) = 60.

The LCM is 60.

LCM(10, 15, 13) = 390.

LCM(2, 10, 15) = 30.

The Least Common Multiple (LCM) of 10, 18, and 15 is 90.

Least Common Multiple (LCM) for 10 17 15 is 510.

If you mean 15, 12, 10 and 60 then the LCM is 60