#1**+1 **

First of all, this problem asks for integers, which means that you want the sum of integers from -12 to 13, inclusive. we can ignore the zero, because there is no value of that. Numbers -12 to 12 cancel out with their opposite number. this leaves one number, **13**. The sum of the integers between -12.1 and 13.3 is just **13**.

Ooflord Aug 16, 2021