Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 2 - Equations, Inequalities, and Problem Solving - Test: Chapter 2: 7

Answer

$x=-\dfrac{23}{67}$

Work Step by Step

Using the properties of equality, the solution to the given equation, $ 4.2x+3.5=1.2-2.5x $, is \begin{array}{l}\require{cancel} 4.2x+2.5x=1.2-3.5 \\\\ 6.7x=-2.3 \\\\ x=-\dfrac{2.3}{6.7} \\\\ x=-\dfrac{2.3}{6.7}\cdot\dfrac{10}{10} \\\\ x=-\dfrac{23}{67} .\end{array}
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