Answer
$\frac{3x}{2}$
Work Step by Step
$-7x^2\div\frac{14x}{3}=-7x^2\times\frac{3}{14x}=\frac{7x^2\times3}{14x}=\frac{21x^2}{14x}=\frac{21x^2\div7x}{14x\div7x}=\frac{3x}{2}$
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