The LCM is 45.
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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.
The LCM of 5, 9, and 15 is 45.
9 = 3^2 15 = 3 x 5 21 = 3 x 7 lcm = 3^2 x 5 x 7 = 315
The LCM is 1260.
The LCM of 5, 3, and 9 is 45, which is the multiple of the combined prime factors of both numbers (3 x 3 x 5 ).The LCM of 9, 5, and 3 is 45