Answer :

[tex] \frac{9~divided~by~3}{12~divided~by~3} = \frac{3}{4} [/tex]

[tex] \frac{3}{4} [/tex] is a simplified form for [tex] \frac{9}{12} [/tex]
[tex] \frac{9:3}{12:3} = \frac{3}{4} [/tex]