$$(\frac{5}{7})^{-1}\times(\frac{14}{25})^{-1}$$
$\frac{5}{2}=2.5$
$$\frac{7}{5}\times \left(\frac{14}{25}\right)^{-1}$$
$$\frac{7}{5}\times \frac{25}{14}$$
$$\frac{5}{2}$$
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$\frac{5}{2} = 2\frac{1}{2} = 2.5$
