Answer
d=9 and d=-9
Work Step by Step
You have |2d+3|=21 and you have to solve it:
First, subtract 3 from both sides to isolate the inequality:
|2d| = 18
Then, divide both sides by 2 to solve for d:
|d|=9
This means that:
d=-9 and 9
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 3 - Solving Inequalities - 3-7 Absolute Value Equations and Inequalities - Practice and Problem-Solving Exercises - Page 211: 49
Update this answer!
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.
