Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Appendix A - Basic Algebra Review - A Exercises: 71

Answer

$x=4$

Work Step by Step

$3x+8=20$ $3x+8-8=20-8$ (Subtracting $8$ from both sides) $3x=12$ $x=\frac{12}{3}$ $x=4$
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