Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 1 - Tools of Geometry - 1-2 Points, Lines, and Planes - Practice and Problem-Solving Exercises - Page 19: 79



Work Step by Step

To solve an equation, isolate the variable on one side of the equation. $3x+9+5x=81$ $8x+9=81$ $8x+9-9=81-9$ $8x=72$ $8x\div8=72\div8$ $x=9$
Update this answer!

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.