Answer
$$+15.$$
Work Step by Step
We have
$$8 + (-1) + (-5)- (-3) + 10=8-1-5+3+10\\
=+15.$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.