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: 36

Answer

The distance from Madrid to Bangkok is 6337 miles.

Work Step by Step

Let $d$ be the distance from Madrid to Bangkok. The distance from Melbourne to Cairo is $d+2338$. $d+(d+2338)=15012$ $\longrightarrow$combine like terms $2d+2338=15012$ $\longrightarrow$addition property $2d+2338-2338=15012-2338$ $\longrightarrow$simplify $2d=12674$ $\longrightarrow$multiplication property $2d\div2=12674\div2$ $\longrightarrow$simplify $d=6337$
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