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: 13

Answer

$x=9$

Work Step by Step

"Sum" indicates addition. $3+4+x=16$ $\longrightarrow$combine like terms $7+x=16$ $\longrightarrow$addition property $7+x-7=16-7$ $\longrightarrow$combine like terms $x=9$
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