Answer
$-\dfrac{13}{18}$
Work Step by Step
Make the fractions similar using their LCD, which is $18$:
$\\=-\dfrac{2(2)}{9(2)}-\left(+\dfrac{1(9)}{2(9)}\right)
\\=-\dfrac{4}{18}-\left(\dfrac{9}{18}\right)
\\=\dfrac{-4-9}{18}
\\=-\dfrac{13}{18}$
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 2.4 - Signed Fractions - Exercises - Page 118: 10
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