Answer
$12-11i$
Work Step by Step
By combining the like terms, the expression $
(5-3i)+(7-8i)
$ simplifies to
\begin{array}{l}
(5+7)+(-3i-8i)
\\=
12-11i
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Section 7.7 - Complex Numbers - Exercise Set - Page 463: 76
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