Answer
$$f=1/3$$
Work Step by Step
You could solve this by cross multiplying where you multiply across from either side of the equal sign. Remember the variable always goes with the numerator and not the denominator. If you cross multiply you get $6f = 2$ Then you divide both sides by 6 to get the variable alone. That gives you the final answer of $f = 1/3$. Another way to do this is just to multiply both sides by the denominator, $2$, so it can cancel out on both sides. That gives you $3f = 1$. Then you divide both sides by 3 to get the variable alone which yields you the same final answer of $f = 1/3$
