Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.6 - Integrated Review - Exponents and Operations on Polynomials: 28

Answer

$ 2y - 18$

Work Step by Step

$(y-9)+(y-9) $ $= y - 9 + y - 9$ $= y+y - 9- 9$ $= 2y - 18$
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