-|4-8b|=12?

Answer 1

No solutions, since this would require
|4-8b| = -12
and absolute value is never negative.

On the other hand, for |4-8b| = 12 (without the negative sign at the front) you would get
4-8b = 12 or 4-8b = -12
<=> 8b = -8 or 8b = 16
<=> b = -1 or b = 2.

Answer 2

that is im possible since the absolute value of 4-8b is automatically positive

and the - in front of it makes it negative thus it cant equal 12