Answer
$-\dfrac{1}{9}$
Work Step by Step
Make the fractions similar using their LCD, which is $9$:
$=\dfrac{2(3)}{3(3)}+\left(-\dfrac{7}{9}\right)
\\=\dfrac{6}{9}+\left(-\dfrac{7}{9}\right)
\\=\dfrac{6-7}{9}
\\=-\dfrac{1}{9}$
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: 4
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