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 196: 23


$4x=2x-30$ $x=-15$

Work Step by Step

"Product" indicates multiplication. The number preceding "less" is the subtrahend. "Twice" indicates multiplication by 2. $4x=2x-30$ $\longrightarrow$addition property $4x-2x=2x-30-2x$ $\longrightarrow$simplify $2x=-30$ $\longrightarrow$multiplication property $2x\div2=-30\div2$ $\longrightarrow$simplify $x=-15$ $\longrightarrow$
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