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The least common denominator for 7, 8, and 10 is 280.
Using the exponential method:
7 = 71
8 = 2 x 2 x 2 = 23
10 = 21 x 51
and the product of the largest exponential of each prime is
23 x 51 x 71 = 8 x 5 x 7 = 280
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∙ 12y ago
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