The biggest common divisor of 9 and 15 is 3.
To find the least common multiples of 9 an 15 you should multiply these numbers and divide the result by their biggest common divisor.
9x15/3=45
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It is: 360
The LCM of 3 and 5 is 15. The multiples of 3 are , 6, 9, 12, 15, and so on. The multiples of 5 are 5, 10, 15, and so on. The LCM is 15.
Find the multiples of 27 and 15:Multiples of 27:..27 x 5 = 135Multiples of 15:..15 x 9 = 135Thus, 135 is the same common denominator for 27 and 15.
Each common multiple of 9 and 10 occurs exactly once (in the list of common multiples), so there is no common multiple that occurs the most. All common multiples of 9 and 10 are the multiples of their least common multiple which is 90.
The way to solve this is as follows:Find the least common multiple of the two numbers.Multiply this least common multiple by 2 and by 3, to get the next two common multiples.