Answer:
[tex]k = \frac{3D}{f} [/tex]
Step-by-step explanation:
[tex]D = \frac{1}{3} fk[/tex]
To solve for k first multiply both sides by 3
That's
[tex]3D = fk[/tex]
Next divide both sides by f in order to isolate k
We have
[tex] \frac{fk}{f} = \frac{3D}{f} [/tex]
Simplify
We have the final answer as
[tex]k = \frac{3D}{f} [/tex]
Hope this helps you
