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Anonymous
63 because:
7: 7, 14, 21, 28, 35, 42, 49, 56, "63", 70
9: 9, 18, 27, 36, 45, 54, "63", 72, 81, 90
Ashley Pogue ∙
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LCM of 9, 2, and 7 = 126
The LCM is: 140
lcm(15, 9, 7) = 315
63