Answer
We get the original number back.
Work Step by Step
If take the reciprocal of $x$:
$\frac{1}{x}$
Then, we take the reciprocal of $\frac{1}{x}$:
$\frac{1}{\frac{1}{x}}=x$
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 - 1.7 Multiplication and Division of Real Numbers - 1.7 Exercise Set - Page 59: 125
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