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    Least Common Multilpes

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    A. Find the LCM (Least common multiple) (84, 108). Show how you obtained your answer.

    B. Suppose LCM (18,A) = 72. What are the possible values, if any, for A? Explain your answer.

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    Solution Preview

    We must find the prime factors of 84 and 108 (in general any two given numbers). We can see that:

    Ok, now to find the LCM we must consider the common factors with ...

    Solution Summary

    Lowest common multiples are found. The possible values are given