College Algebra 7th Edition

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: 6

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. $\frac{1}{a}+\frac{1}{b}\ne\frac{1}{a+b}$.
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