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Write the numbers out in their prime factorisations in power format, then multiply together the highest power of all the prime numbers taken across both the numbers:

24 = 23 x 3

96 = 25 x 3

lcm = 25 x 3 = 96

Alternatively, write out the multiples of the numbers, and spot the first common one:

24: 24, 48, 72, 96, 120, ...

96: 96, 192, ...

(You may notice that 96 = 4 x 24 so the lcm will be 96.)

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12y ago

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