Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 1 - Section 1.4 - Basic Rules of Algebra - Exercise Set - Page 54: 67

Answer

$7x+2x$, simplifes to $9x$

Work Step by Step

7 times a number $\rightarrow 7x$ twice the number $\rightarrow 2x$ the sum...$\rightarrow \boxed{ 7x+2x}$ Combine like terms by combining the coefficients of the terms and keeping the same variable factor. result:$\qquad 9x$
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