Answer
Choice D
Work Step by Step
If $(x+3)$ is the sum, then $-(x+3)$ which is equal to $-x-3$ is the opposite of the sum. Hence, $\text{
Choice D
.}$
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.