Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 6 - Section 6.5 - Translating Words into Algebraic Symbols - Exercises - Page 248: 21



Work Step by Step

We can call our unknown number "$x$". A product means a multiplication. A number decreased by 7 can be written as $x-7$. The same number increased by 5 can be written as $x+5$. (Remember to add the parenthesis to the multiplication.) So, $(x-7)(x+5)=13$
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.