Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 3 - Section 3.4 - Linear Equations in One Variable and Problem Solving - Exercise Set - Page 199: 48


There are 44,720 thousand personal computers in Italy. There are 53,520 thousand personal computers in Russia.

Work Step by Step

Let $c$ be the personal computers in Italy. The personal computers in Russia are $c+8800$. $c+(c+8800)=98240$ $\longrightarrow$combine like terms $2c+8800=98240$ $\longrightarrow$addition property $2c+8800-8800=98240-8800$ $\longrightarrow$simplify $2c=89440$ $\longrightarrow$multiplication property $2c\div2=89440\div2$ $\longrightarrow$simplify $c=44720$ $c+8800=44720+8800=53520$
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