The lowest common multiple of 9 and 12 is 36. The least common multiple of two numbers (x and y) is the smallest number that has both x and y as factors.
Know MoreThe best method to find the least common multiple is to split both numbers into prime factors. That means 9 is 3 x 3, and 12 is 2 x 2 x 3. Next, it is best to count how many times each prime factor appears in each number. Three appears twice in 9 and once in 12. Two appears twice in 12 and never in 9. Take the maximum amount each prime appears in either number. That means 3 twice and 2 twice. Finally multiply the primes together to find the least common multiple. 3 x 3 x 2 x 2 equals 36, which is the least common multiple of 9 and 12.
Learn more about ArithmeticThe lowest, or least, common multiple of 4 and 6 is 12. This is the smallest number that is a multiple of both 4 and 6.
Full Answer >The least common multiple of 5, 12 and 24 is 120. This multiple can be found by looking at the common prime factors of the three numbers.
Full Answer >To find the least common multiple of two numbers, factor the two numbers, noting the frequency of the prime factors, and then multiply the most repeated factors together. Perform division to check your answer when complete.
Full Answer >The least common multiple of 12 and 20 is 60. The least common multiple is the lowest positive number that is a shared multiple of two or more positive numbers.
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