Question

Given the function f(x)=2(x+6)-4, for what values of x isf(x)=6?

Answer 1

The answer to your question is x = -1

Explanation:

Data

f(x) = 2(x + 6) - 4

f(x) = 6

Process

1.- Equal the function to 6

6 = 2(x + 6) - 4

2.- Expand

6 = 2x + 12 - 4

3.- Simplify like terms

6 = 2x + 8

4.- Substract 8 in both sides

6 - 8 = 2x + 8 - 8

5.- Simplify

- 2 = 2x

6.- Divide both sides by 2

-2/2 = 2x/2

7.- Simplify

-1 = x