Respuesta :
The factors of 9 are 1, 3, and 9 .
The factors of 27 are 1, 3, 9, and 27 .
The factors of 63 are 1, 3, 7, 9, 21, and 63 .
The common factors of 9, 27, and 63 are 1, 3, and 9.
Their greatest common factor is 9 .
The factors of 27 are 1, 3, 9, and 27 .
The factors of 63 are 1, 3, 7, 9, 21, and 63 .
The common factors of 9, 27, and 63 are 1, 3, and 9.
Their greatest common factor is 9 .