1, 2, 7 and 14 all divide into both 14 and 84, without leaving a remainder.
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14% of 84 = 11.76
Common multiples of 14 and 84 include all multiples of 84 (84, 168, 252 and so on) because 84 = 6 x 14, a multiple of 14.
The GCF is 14.
Oh honey, the Greatest Common Factor (GCF) for 42, 63, and 84 is 21. That's the largest number that divides evenly into all three of those numbers. So there you have it, simple as that!
The LCM is: 84