$$\frac { - 1 } { \frac { 5 } { 4 } + ( \frac { - 14 } { 4 } ) }$$
$\frac{4}{9}\approx 0.444444444$
$$\frac{-1}{\frac{5}{4}-\frac{7}{2}}$$
$$\frac{-1}{\frac{5}{4}-\frac{14}{4}}$$
$$\frac{-1}{\frac{5-14}{4}}$$
$$\frac{-1}{-\frac{9}{4}}$$
$$-\left(-\frac{4}{9}\right)$$
$$\frac{4}{9}$$
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$\frac{2 ^ {2}}{3 ^ {2}} = 0.4444444444444444$
