Answer
$\frac{7}{10}$ and $y\ne6.$
Work Step by Step
$\frac{4}{y-6}\div\frac{40}{7y-42}=\frac{4}{y-6}\frac{7(y-6)}{40}=\frac{7}{10}$ and $y\ne6.$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 6 - Section 6.1 - Rational Expressions and Functions; Multiplying and Dividing - Exercise Set - Page 414: 75
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