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15 January, 02:39

Find the LCD of the following list of fractions. 5/21, 10/14,2/4

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  1. 15 January, 02:56
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    Like the other two problems: first, prime factor, then collect factors which appear the most from the lists:

    21 = 3 x 7

    14 = 2 x 7

    4 = 2 x 2

    2 x 2 x 3 x 7 = 84
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