#### Answer

$f=1/6$

#### Work Step by Step

The quantity inside of the parenthesis is being multiplied by 6. Thus, we first divide by 6 to find that $-4f+5=13/3$. We need to get the f alone. Thus, we cancel out the addition by subtracting 5 on both sides. This leaves us with the equation $-2/3=-4f$. In order to cancel out multiplication, we use division, so we divide both sides by -4 to get that $f=1/6$. We plug 1/6 in for f and confirm that our answer is, indeed, correct.