Answer
To evaluate an expression is to bring an expression to a constant.
Work Step by Step
Example:
In $4x+20$, $x=12$.
You insert 12 into $4x+20$.
$4(12)+20$
$48+20$
$68$
The answer is 68.
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 - 1.1 Introduction to Algebra - 1.1 Exercise Set - Page 10: 78
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