#### Answer

$16$

#### Work Step by Step

solve using PEMDAS
$(39-18)-(23-18)$
=$(21)-(5)$
=$16$

Published by
Brooks Cole

ISBN 10:
1285199197

ISBN 13:
978-1-28519-919-1

$16$

solve using PEMDAS
$(39-18)-(23-18)$
=$(21)-(5)$
=$16$

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