Work Step by Step
A key rule to remember is that subtracting a negative is the same as addition. Thus, we find: $8.5-(-7.9)=8.5+7.9=16.4$
You can help us out by revising, improving and updating this answer.Update this answer
After 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.