Answer
$2$
Work Step by Step
Using order of operations, the given expression, $
16-21+(-15)-(-22)
$, simplifies to
\begin{array}{l}\require{cancel}
16-21-15+22
\\\\=
-5-15+22
\\\\=
-20+22
\\\\=
2
.\end{array}
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 - 1.3 - Integers: Addition and Subtraction - Problem Set 1.3 - Page 20: 65
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