Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - 5.5 Real Numbers and Their Properties; Clock Addition - Exercise Set 5.5 - Page 311: 99

Answer

The statement is false. A corrected statement that is always true is: $2\cdot a + 5 = a \cdot 2+5$

Work Step by Step

The statement is false. Simplifying both sides gives us the statement: $2a+5=5a+2$ This is a conditional statement which is true only when $a=1$. A corrected statement that is true for all values of $a$ would be: $2\cdot a + 5 = a \cdot 2+5$
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.