2 and 28, respectively.
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LCM = 70 GCF = 7
The LCM is: 144The GCF is: 4
If that's really 4270 and 84, the GCF is 14 and the LCM is 25620. If that's 42, 70 and 84, the GCF is 14 and the LCM is 420.
14
4 and 24, respectively.