Answer
$7.8$
Work Step by Step
The given expression, $
3.1-(-4.7)
$, simplifies to
\begin{array}{l}\require{cancel}
3.1+4.7
\\\\=
7.8
.\end{array}
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 1 - Introduction to Algebraic Expressions - Test: Chapter 1 - Page 78: 21
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