Answer:
[tex]f=\frac{2}{3} d-3[/tex]
Step-by-step explanation:
[tex]2d-3f=9[/tex]
Solve for [tex]f[/tex] variable.
Subtract [tex]2d[/tex] on both sides.
[tex]2d-3f-2d=9-2d[/tex]
[tex]-3f=9-2d[/tex]
Divide both sides by [tex]-3[/tex].
[tex]\frac{-3f}{-3} =\frac{9-2d}{-3}[/tex]
[tex]f=\frac{-9}{3} +\frac{2}{3} d[/tex]
[tex]f=-3+\frac{2}{3} d[/tex]
