Question

How do you evaluate `(+ 65) - ( - 13)`?

Answer 1

`78`

Explanation:

We know that there is `-1` before the parenthesis. So we multiply the term in parenthesis by `-1`

`(+65)-1(-13)`

Remember the following

`+*+=+`

`-*- =-`

`+*- =-`

So

`(+65)+13`

`65+13`

`78`