Question 398940
In general:


|x-2| = (x-2) if (x-2) is greater than or equal to 0.
|x-2| = -(x-2) if (x-2) is less than 0.


If x is less than 2, then the expression |x-2| will be less than 0, so the expression |x-2| will be equivalent to -(x-2).


Example:


let x = 1.
|1-2| = |-1| = -(-1) = 1