Question

Solve for x http://i.imgur.com/22LcYjP.png
x = 7/5

x = 7/5; x = -7/5

x = -7/5; x = 3

x = 3

Answer 1

|(5b - 4)| = 11
To get rid of the absolute bars, split it into two equations:
5b - 4 = 11
-(5b - 4) = 11

5b - 4 = 11
add 4 to both sides:
5b = 15
divide by 5
b = 3

-(5b - 4) = 11
multiply by -1
5b - 4 = -11
add 4
5b = -7
divide by 5
b = -7/5

b = -7/5 ; b = 3
divide by 5
b = -7/5

Answer 2

omit the last two lines.
The answer is b = -7/5; b = 3.

In the link they use b but in the answers they have x.