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Anonymous
It is itself 63. The greatest factor of any number is itself.
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1, 3, 7, 9, 21, 63 (1 x 63, 3 x 21, 7 x 9)
1, 3, 7, 9, 21, 63.
1, 3, 7, 9, 21, 63
The GCF is: 63
GCF(189, 441, 63) = 21.
63 is 48% of 131.25
Since 63 is a multiple of 9, it is automatically the LCM.
63 - 21 = 42