Answer:
[tex]-12f[/tex]
Step-by-step explanation:
First, expand the equations with the distributive property. [tex](-4f+9)[/tex] becomes [tex]-4f+9[/tex]. [tex]-(8f+9)[/tex] becomes [tex]-8f-9[/tex]. Now create the expanded version of the equation, [tex]-4f+9-8f-9[/tex]. This becomes [tex]-12f[/tex].
