Answer
The number is a solution to the statement.
Work Step by Step
As the problem asks us to do, we plug in -8 for a.
9(-8)-(-72)=0
0=0, so this statement is correct.
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.