Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 9 - Basic Algebra - Review Exercises: 104

Answer

$20-x$

Work Step by Step

The phrase 'a number $x$ subtracted from 20' means the difference between 20 and x. Therefore, we are subtracting x from 20. In symbols, this is $20-x$.
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