If the absolute value of a = 3, the absolute value of B = 5, and a is different from B, then the absolute value of (a-b) =?

If the absolute value of a = 3, the absolute value of B = 5, and a is different from B, then the absolute value of (a-b) =?

According to the meaning of the title
a=3 b=-5
Or a = - 3, B = 5
therefore
A-B = 8 or - 8
therefore
The absolute value of (a-b) = 8