86
A "difference" is either the result of a subtraction (the difference between 7 and 5 is 7 minus 5), or its absolute value (so that the difference between 7 and 5 is the same as the difference between 5 and 7).
Both are 13.
There must be a linear scale on the axes, so the even marks must have a constant difference between them. Such usual differences are 1, 5, 10, 50, etc.
The difference between 4 and 5 is 1 and the difference between 1 and 5 is 4.
the difference between -5 and 5 is 10
Chanel No. 5
the difference between them is
19
the difference of 4 and 5 is 5 is greather at 4
5
The difference between the numbers 4 and 5 is 1. The difference between the numbers 1 and 5 is 4.
5 - (-5) = 10