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Using the GCF between 4 and 72 (which is 4) you can simplify the fraction to 1/18

Q: What is the gcf of 4 over 72?

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The GCF is 4.

The GCF is 4.

The GCF is 4.

Find the greatest common factor of 72 and 90: the GCF is 18 Divide both by 18 to give 4/5

1. Factorise 72 and 90. 2 Find the greatest common factor. 3. Divide both, 72 and 90 by their gcf. So, 72 = 2*2*2*3*3 90 = 2*3*3*5 and their gcf = 2*3*3 Then 72/gcf = 2*2 = 4 and 90/gcf = 5 So 72/90 = 4/5

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The GCF of 16 and 72 is 8. 16/72 can be reduced to 2/9

It is: 4