Least common multiple of 18 and 15 is 90.
18 = 2 x 3 x 3; 15 = 3 x 5. There is a common factor of 3 so ignore one occurence of this figure when multiplying out: LCM = (2 x 3 x 3) x 5 = 90.
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90
The least common multiple of 18 , 56 = 504
The least common multiple of 18 and 200 is 1800.
The least common multiple of the numbers 6,915 and 18 is 41,490.
The Least Common Multiple of 12, 18, and 30 is 180.