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greatest common factor.

The** g**__reatest common factor__ is the largest number that can be

divided by the numerator**evenly**. In this case the number is 6

divided by the numerator

denominator have no common factor other than 1.

step 1: list the factors of the numerator.

**1,2,3,4,****6****,12**

step 2: list the factors of the

denominator..**1,2,3,5,****6****,10,15,30**

denominator..

step 3: find the greatest common factor (GCF)

by the

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