Answer:
The answer is "2"
Explanation:
It must all be noticed that only [tex]a < x < b[/tex] its value will be [tex]0 < |x -c \ | < \delta[/tex].
It implies that [tex]\delta[/tex] value is really the nearest c range.
Finish point in (a, b).
Of course, point b was similar to point c in the above illustration. That Selection
Both two are: 7-5
[tex]= 2[/tex]