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The prime factors of 42 are 2 x 3 x 7 and the prime factors of 56 are 23 x 7.
The LCM of 42 and 56 is the product of the highest powers of each prime factor,
23 x 3 x 7 = 8 x 3 x 7 = 168.
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What is the decimal of 42 over 56?
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