Work Step by Step
$|4d|\leq20\longrightarrow$ write as a compound inequality $-20\leq4d\leq20\longrightarrow$ divide all parts by 4 $-20\div4\leq4d\div4\leq20\div4\longrightarrow$ divide $-5\leq d\leq5$
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.