Answer
$-21$
Work Step by Step
$n-9=-30$ $\longrightarrow$addition property of equality
$n-9+9=-30+9$ $\longrightarrow$combine like terms
$n=-21$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 2 - Review - Page 157: 131
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