Answer
-7
Work Step by Step
Because multiplication is before subtraction and addition in order of operations, we first multiply and then we add and subtract.
$6-4+(-12)-(-21)-18=6-4-12+21-18=-7$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.4 - Integers: Multiplication and Division - Problem Set 1.4 - Page 26: 59
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