Answer
-5
Work Step by Step
When adding numbers of different signs, we subtract the absolute values (15 - 10 = 5), and take the sign of the number with the larger absolute value, which is negative here (-5).
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.