Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 6 - Algebra: Equations and Inequalities - 6.3 Applications of Linear Equations - Exercise Set 6.3 - Page 373: 15


Translation to algebraic expression (not simplified): $5x-2x$ Simplified form: $3x$

Work Step by Step

Let $x$ = the unknown number The product of five and a number: $5x$ Twice the number: $2x$ The difference between the product of five and a number and twice the number: $5x - 2x$ Simplifying gives: $=x(5-2) \\=x(3) \\=3x$
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