Respuesta :

Answer: 1

Step-by-step explanation:

Factors of 14:

1, 2, 7, 14

Factors of 45:

1, 3, 5, 9, 15, 45

Factors of 90:

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

Common factor:

1