The GCF is: 12
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60.
The GCF is 70.
The ratio of 160 to 420 can be simplified by dividing both numbers by their greatest common divisor, which is 20. This simplifies the ratio to 8:21. This means that for every 8 units of 160, there are 21 units of 420.
To simplify the fraction 420/1980, we first find the greatest common divisor (GCD) of the two numbers, which is 60. We then divide both the numerator and denominator by the GCD to get the simplified fraction. So, 420/1980 simplifies to 7/33.
The GCF of 420 and 108 is 12. 2 x 2 x 7 x 5 x 3 3 x 3 x 3 x 2 x 2 2x2x3=12 GCF=12