Answer
$n+2n=-15$
Work Step by Step
From the problem:
"the sum of $n$ and twice $n$:" $n+2n$
"is negative fifteen:" $=-15$
Combine:
$n+2n=-15$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 1 - Review - Page 44: 86
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