Answer
$-\dfrac{3}{x}; x \ne 0$
Work Step by Step
The expressions are similar so subtract the numerators and copy the denominator to obtain:
$=\dfrac{3-6}{x}
\\=-\dfrac{3}{x}; x \ne 0$
($x$ cannot be zero as it makes the expression undefined)
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter R - Section R.7 - Rational Expressions - R.7 Assess Your Understanding - Page 71: 38
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