College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 1 - Equations and Inequalities - Exercise Set 1.7 - Page 196: 76


$x\leq-2, x\geq4$

Work Step by Step

Since we are simplifying an absolute value, first solve for the original inequality, and then flip the sign and make the opposite side negative in the second inequality. $|\frac{3x-3}{9}|\geq1$ $\frac{3x-3}{9}\geq1$ $3x-3\geq9$ $3x\geq12$ $x\geq4$ $\frac{3x-3}{9}\leq-1$ $3x-3\leq-9$ $3x\leq-6$ $x\leq-2$ $x\leq-2, x\geq4$
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