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 1-14 - Cumulative Review - Final Exam - Page 930: 35

Answer

$x=\dfrac{3}{5}$

Work Step by Step

Using $a(b+c)=ab+ac$ or the Distributive Property, the given equation, $ 8(x-1)-3(x-2)=1 ,$ is equivalent to \begin{align*}\require{cancel} 8(x)+8(-1)-3(x)-3(-2)&=1 \\ 8x-8-3x+6&=1 \\ (8x-3x)+(-8+6)&=1 &(\text{combine like terms}) \\ 5x-2&=1 .\end{align*} Using the properties of equality, the equation above is equivalent to \begin{align*}\require{cancel} 5x-2+2&=1+2 \\ 5x&=3 \\\\ \dfrac{\cancel5x}{\cancel5}&=\dfrac{3}{5} \\\\ x&=\dfrac{3}{5} .\end{align*} Hence, the solution to the equation $8(x-1)-3(x-2)=1$ is $x=\dfrac{3}{5}$.
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