HELP ASAP I WILL MARK BRAINLIEST

think its the second one if it is wrong im sooo sorry

Step-by-step explanation:

pls dont come for me

B

Step-by-step explanation:

This is a neat question

f(x) - g(x) = 2x           Add g(x) to both sides

f(x) = g(x) + 2x

Now you need the right hand side to have 20 added to g(x).

2x must = 20

2x = 20                    Divide by 2

x = 20/2

x = 10

So the answer must be x = 10