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Wiki User
189
Webster Gutkowski ∙
9 and 7 are factors of 63, as are 3 and 21. So 3 X 3 X 7 will give you 63
7x9=63
63
63 and 3
7, 3, and -3.
3 x 63 = 189 3 + 63 = 66
255
1 x 63, 3 x 21, 7 x 9