Respuesta :

Noah11012
I am assuming you want to find the simplest form of the inequality.

1. [tex]3f + 9 \ \textless \ 21[/tex]
2. [tex]3f < 12[/tex]
3. [tex]f < 4[/tex]

1. Start
2. Subtract 9 from each side
3. Divide both sides by 3