Answer
$-\frac{36}{x}$
Work Step by Step
$-3x\div\frac{x^2}{12}=\frac{-3x}{1}\times\frac{12}{x^2}=\frac{-3x\times12}{1\times x^2}=\frac{-36x}{x^2}=\frac{-36x\div x}{x^2\div x}=\frac{-36}{x}=-\frac{36}{x}$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 4 - Section 4.3 - Multiplying and Dividing Fractions - Exercise Set - Page 247: 51
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