Answer
$9A$
Work Step by Step
We use the hexadecimal addition table 16.3 on page 560 to obtain:
$$
78+22=9A
.$$
Check, using decimals: $78_{16}=120_{10}, \ 22_{16}=34_{10} $
$$
120+34=154, \quad 9A_{16}=9\times 16+10\times16^0=144+10=154
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 16 - Section 16.8 - Addition and Subtraction of Hexadecimal Numbers - Exercise - Page 562: 8
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