70
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2 x 2 x 7 = 28 5 x 7 = 35 2 x 2 x 5 x 7 = 140, the LCM
The LCM of 2, 5 & 7 is...70
The LCM of 2 and 3 is 6. The LCM of 2 and 4 is 4. The LCM of 5 and 7 is 35. The LCM of 7 and 9 is 63.
Factor them. 2 2 x 7 5 x 5 x 7 Combine the factors, eliminating duplicates. 2 x 5 x 5 x 7 = 350, the LCM
56 = 2^3 * 7 96 = 2^5 * 3 LCM = 2^5 * 3 * 7 = 32 * 21 = 672