Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - R.2 Real Numbers and Their Properties - R.2 Exercises - Page 20: 64

Answer

$-9r$

Work Step by Step

$3r(\frac{-12}{4}) = 3r(-3) = -9r$
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