Answer
2x + x or x + 2x
Work Step by Step
The sum of twice a number and the number
let the number be x
The sum of twice of x and x
twice of x means 2x
So, 2x + x or x +2x
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 9 - Basic Algebra - 9.8 Using Equations to Solve Application Problems - 9.8 Exercises - Page 688: 21
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