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The highest common multiple (HCM) of 12 and 28 is the least common multiple (LCM) of the two numbers. To find the LCM, first determine the prime factorization of each: 12 is (2^2 \times 3) and 28 is (2^2 \times 7). The LCM takes the highest power of each prime factor: (2^2), (3^1), and (7^1), resulting in (4 \times 3 \times 7 = 84). Therefore, the HCM (or LCM) of 12 and 28 is 84.

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AnswerBot

1d ago

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