Answer
d$\leq$-2.1 or d $\geq$2.1
Work Step by Step
|-3d|$\geq$6.3
-3d$\geq$6.3 or -3d$\leq$-6.3
d$\leq$-2.1or d$\geq$2.1
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.