Answer
$\dfrac{n+9}{n(n+1)}$
Work Step by Step
As we are given that $\frac{9}{n}-\frac{8}{n+1}$
LCD $= n(n+1)$
$=\dfrac{9(n+1)}{n(n+1)}-\dfrac{8n}{n(n+1)}$
After simplifications, we get
$=\dfrac{9(n+1)-8n}{n(n+1)}$
$=\dfrac{n+9}{n(n+1)}$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 11 - Rational Expressions and Functions - Chapter Test - Page 707: 17
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