Answer
$10$
Work Step by Step
Using the rules, $1-1=0, 0-0=0, 1-0=1, 0-1=1$ (found by borrowing, $10-1=1),$
we have
$1001−111=10$.
Check in the binary,
$10+111=1001$.
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 16.3 - Subtraction of Binary Numbers - Exercise - Page 554: 5
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