Respuesta :

First, find the greatest common factor.  That is the greatest number that both can be divided by.  This number.  Divide both 9 and 63 by 9.  This will give you 1/7.
TSO
[tex] \frac{9}{63} = \frac{9 \times 1}{9 \times 7} = \frac{9}{9} \times \frac{1}{7} = 1 \times \frac{1}{7} = \frac{1}{7} [/tex]

1/7 is the final answer :)