Hey there!
ANSWER: [tex]f=-16[/tex]
EXPLANATION:
[tex]\frac{f}{4}-5=-9[/tex]
Simplify both sides and you get:
[tex]\frac{1}{4}f-5=9[/tex]
Now add 5 to both sides and you get:
[tex]\frac{1}{4}f=-4[/tex]
Now you have to multiply both sides and you get:
[tex]f=-16(ANSWER)[/tex]
Hope this helps!
[tex]\text {-TestedHyperr}[/tex]
