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: 19


$5x-40=8+x$ $x=12$

Work Step by Step

The term preceding "subtracted from" is the subtrahend. "Times" indicates multiplication. "More than" indicates addition. $5x-40=8+x$ $\longrightarrow$addition property $5x-40+40-x=8+x+40-x$ $\longrightarrow$simplify $4x\div4=48\div4$ $\longrightarrow$multiplication property $4x=48$ $\longrightarrow$simplify $x=12$
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