Answer
(a) Yes
(b) No
Work Step by Step
(a) Yes, these expressions are equal because:
$\displaystyle \frac{3+a}{3}=\frac{3}{3}+\frac{a}{3}=1+\frac{a}{3}$
(b) No, denominators do not "add", i.e. $\frac{1}{a}+\frac{1}{b}\ne\frac{1}{a+b}$.
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter P, Prerequisites - Section P.7 - Rational Expressions - P.7 Exercises - Page 50: 6
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