Explanation: The least common denominator of a set of fractions is the lowest number that is a multiple of all the denominators. So, to figure problem #2, you would list the common denominators of 24: 1 and 24; 2 and 12; 3 and 8; 4 and 6. Then, find the two whose sum is 14, which are 2 and 12.

Mar 19th, 2015

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