Answer
$-12cd-15$
Work Step by Step
$3(-4cd-5)$
Multiply the terms inside the bracket by 3:
$(-4cd\times3)+(-5\times3)$
$=-12cd-15$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 1 - Foundations for Algebra - 1-7 The Distributive Property - Practice and Problem-Solving Exercises - Page 51: 78
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