Question

A student asks about the relation between least common multiple and least common denominator. How do yourespond?

Answer 1

When you're adding or subtracting fractions, you need to find the least common denominator.

For instance:

1/2 + 3/4 + 5/8 = 4/8 + 6/8 + 5/8 = 15/8

The least common denominator is also the least common multiple. In the above problem that is 8.

Answer 2

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