The LCM is 255.
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lcm(85, 30) = 510. 85 = 5 x 17 30 = 2 x 3 x 5 lcm = 2 x 3 x 5 x 17 = 510
Least Common Multiple (LCM) for 3 5 3 5 is 15.
The Least Common Multiple (LCM) for 18 17 5 is 1,530.
lcm(5, 3) = 15 lcm(5, 45) = 45 lcm(3, 45) = 45 lcm(5, 3, 45) = 45
Since both 17 and three are primes, then 1 is their LCM.