Answer
15
Work Step by Step
Because the signs are the same, add the absolute value of (+6) and (+9) which is 6 + 9 = 15.
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 2 - Section 2.1 - Addition of Signed Numbers - Signed Numbers Drill 1 - Page 109: 15
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