Question

How do you combine `( x +1 )/ 2 - (w/2)`?

Answer 1

Since `(x+1)/2` and `w/2` have the same denominator:

`color(white)("XXXX")` `((x+1)/2) - (w/2)`

`color(white)("XXXX")` `color(white)("XXXX")` `= (x+1-w)/2`

(no further simplification is possible)