Question

What formula could I use to solve this ?
Using f(x) =-3+7
What is x when f(x) = -20

Answer 1

Answer:

x = 9

Step-by-step explanation:

I think you wrote the question wrong (I am assuming that there is a x next to the -3).

Subtract 7

-27 = -3x

divide by -3

9 = x