Answer
$-8$
Work Step by Step
Using order of operations, the given expression, $
5+7-8-12
$, simplifies to
\begin{array}{l}\require{cancel}
12-8-12
\\\\=
4-12
\\\\=
-8
.\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: 55
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