The GCF is 3.
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The same as the GCF of 28 and 7 (7 is the remainder when you divde 63 by 28).
The LCM is 315.
The LCM is 315.
Well we need to find out the difference first. 105-63 = 42. So there is a different of 42. There is a 66.66% change from 63 to 105.
The Greatest Common Divisor/Denominator is 21