Answer:
Finding the absolute value of a number is just like finding the opposite of a word.
The absolute value of -12 is 12.
The absolute value of 8 is 8. The reason why is because it's already a positive number and cannot be changed to a negative number.
So now we'll subtract 12-8 which equals 4.
So the answer to this problem is 4.
Example of absolute value
|-3|=3
|-14|=14
|20|=20
|33|=33