Answer:
-2h = -2f + -2g
Explanation:
Unless the problem gives you numbers to substitute for H, F, and G... you just need to simplify!
First, just times H by -2 (-2h), and do the same for F and G. Now you should have -2h, -2f, and -2g. Just place them where they go in the equation. :)
Because the variables are not all the same, you cannot add them together to complete the equation, so that is all you have to do!