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 53: 40


$\dfrac{7}{3}x - 7$

Work Step by Step

RECALL The distributive property states that for any real numbers a, b, and c: $a(b-c) = ab -ac$ Use the distributive property by multiplying $\frac{1}{3}$ to each term of the binomial factor to obtain: $=\frac{1}{3}(7x)-\frac{1}{3}(21) \\=\frac{7}{3}x-\frac{21}{3} \\=\frac{7}{3}x - 7$
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