The Greatest Common Factor (GCF) of 120, 70, and 45 is 5.
The Least Common Multiple (LCM) of 120, 70, and 45 is 2,520.
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LCM of 70 and 45 is 630.
LCM = 70 GCF = 7
The GCF is 5.
GCF: 7 LCM: 210
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.