To find the lowest common multiple you first need to split the numbers into their prime factors:
5=5
12=2x2x3
The next step would be to identify any common factors. In this case there are none, so we just take the factors we have and multiply them together:
5x2x2x3 = 60
Thus, the least common multiple of 5 and 12 is 60.
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LCM is the product divided by the GCF.
5 is prime and not a factor of 12, so the GCF =1
5 * 12 / 1 = 60 ■
The lowest common multiple is 180
The least common multiple of 12 and 30 is 60. 60/12=5 and 60/30=2.
The lowest multiple of any number is the number itself. The lowest common multiple of 4 and 5 is 20.
The least common factor of 5 and 12 is the smallest number which divides both of them and it is 1, as it is for all pairs of numbers.(It is also the highest common factor of 5 and 12, as 5 and 12 only have one common factor: 1.)The least, or lowest, common multiple of a pair of numbers is the smallest number which is a multiple of both of them, which for 5 and 12 is 60.
The lowest common multiple of 8, 9 and 12 is 72 and so the answer will the first multiple of 72 that contains 5 digits.