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Anonymous
The GCF is 9.
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GCF(-63, 9, 90) = 9
GCF (45, 81, 90) = 9
The greatest common factor is 15.
The GCF is 3.
30
The factors of 81 are: 1, 3, 9, 27, 81The factors of 90 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90The common factors are: 1, 3, 9