Answer
-12
Work Step by Step
2x -3 y -4 z Replace x with -2, y with 4, z with -1
2(-2) - 3(4) - 4(-1)
= -4 -12 +4 simplify
= -16+4
=-12
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 2 - Section 2.5 - Order of Operations - Exercise Set - Page 139: 63
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