Answer
$-\frac{3}{5}$
Work Step by Step
$-\frac{1}{4}\div\frac{5}{12}=-\frac{1}{4}\times\frac{1}{\frac{5}{12}}=-\frac{1}{4}\times\frac{12}{5}=-\frac{1\times12}{4\times5}=-\frac{12}{20}=-\frac{12\div4}{20\div4}=-\frac{3}{5}$
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