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Since 45 is a factor of 90, it is automatically the GCF.

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Q: Greatest common factor of 45 and 90?

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The greatest common factor of 90 , 30 , 45 = 15

45 is the greatest common factor of 90 and 135.The GCF is 45.

The greatest common factor of 15,45, and 90 is 15.

How about: 45

The GCF of 24, 45, and 90 is 3.

GCF (45, 81, 90) = 9

The greatest common factor of the numbers 45, 75 and 90 is 15.

171

It is: 15

It is: 9

45 is the greatest common factor of 90 and 135

The GCF of 45 and 90 is 45Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 45 are 1, 3, 5, 9, 15, and 45.The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90.The common factors are 1, 3, 5, 9, 15, and 45. Therefore, the greatest common factor is 45.