Answer
$x=-\frac{3}{7}$
Work Step by Step
We know that $|ax+b|\geq0$ for all real numbers $a,b$. Hence here the solution set is $|7x+3|=0\\7x+3=0\\7x=-3\\x=-\frac{3}{7}$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 1, Equations and Inequalities - 1.7 Solve Absolute Value Equations and Inequalities - 1.7 Exercises - Skill Practice - Page 56: 68
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