Answer
$16$
Work Step by Step
solve using PEMDAS
$(39-18)-(23-18)$
=$(21)-(5)$
=$16$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 1 - Section 1.2 - Order of Operations - Exercise - Page 14: 13
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