The LCM always be the largest of the given numbers or a multiple of the largest number.
The largest number given is 45, but 18 will not divide evenly into 45. The next multiple of 45 is 90 (2 x 45). Since 90 is divisible by both 5 and 18, then 90 is the LCM.
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LCM(45, 18) = 90.
45 = 32 x 5 15 = 3 x 5 18 = 2 x 32 27 = 33 LCM = 2 x 33 x 5 = 270
The LCM of 5 and 9 is 45. The LCM is the product of all numbers divided by their highest common factor. 5 is prime, and 9 = 3 x 3 x 1, so the GCF is 1. Thus, the LCM is 5 x 9 = 45.45
The LCM of 18, 27, and 45 is 270
To find the least common multiple (LCM) of 9, 45, and 81, we first need to factorize each number. The prime factorization of 9 is 3^2, 45 is 3^2 * 5, and 81 is 3^4. The LCM is the product of the highest power of each prime factor that appears in any of the numbers. Therefore, the LCM of 9, 45, and 81 is 3^4 * 5, which equals 405.