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18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234, . . .
4.2
It is: 18
2 x 3 x 3 = 18
All multiples of 64 are multiples of 8.
Factors create multiples, multiples break down into factors.
126
2
18
The LCM is: 72
NO
90
It is 6
9
one...
The GCF is 6.