No. 3n is not a factor of 3n + 7.
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9 = 3 x 3 21 = 3 x 7 24 = 2 x 2 x 2 x 3 GCF = 3
The greatest common factor of 63 and 195 is 3.
The factors of 9 are:1, 3, 9The factors of 13 are:1, 13The Greatest Common Factor (GCF) is:1
The GCF is 9.
126 = 2 * 3 * 3 * 7 45 = 3 * 3 * 5 So their GCF is 3 * 3 = 9