Answer
$7z$
Work Step by Step
To find the LCD, or the Least Common Multiple,we must write out each as products of prime factors.
$z =z$
$7z = 7 \times z $
The Least Common Multiple, or LCD, then is $7\times z = 7z$
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 - 11-4 Adding and Subtracting Rational Expressions - Practice and Problem-Solving Exercises - Page 675: 19
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