Introductory Algebra for College Students (7th Edition)

by Blitzer, Robert F.

Published by Pearson

ISBN 10: 0-13417-805-X

ISBN 13: 978-0-13417-805-9

Chapter 1 - Section 1.5 - Addition of Real Numbers - Exercise Set - Page 63: 51

Answer

$-23a$

Work Step by Step

$... (-8)a+(-15)a=...$ Apply the distributive property, $...=[-8+(-15)]a=\quad$ ... same signs in brackets. Keep the sign, add the absolute values... $=-(8+15)a$ = $-23a$

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