$$[2( \frac{ 1 }{ 2 } )-4][3( \frac{ 1 }{ 2 } )( \frac{ 1 }{ 2 } )-2( \frac{ 1 }{ 2 } )+5]$$
$-\frac{57}{4}=-14.25$
$$\left(1-4\right)\left(3\times \frac{1}{2}\times \frac{1}{2}-2\times \frac{1}{2}+5\right)$$
$$-3\left(3\times \frac{1}{2}\times \frac{1}{2}-2\times \frac{1}{2}+5\right)$$
$$-3\left(\frac{3}{2}\times \frac{1}{2}-2\times \frac{1}{2}+5\right)$$
$$-3\left(\frac{3}{2\times 2}-2\times \frac{1}{2}+5\right)$$
$$-3\left(\frac{3}{4}-2\times \frac{1}{2}+5\right)$$
$$-3\left(\frac{3}{4}-1+5\right)$$
$$-3\left(\frac{3}{4}-\frac{4}{4}+5\right)$$
$$-3\left(\frac{3-4}{4}+5\right)$$
$$-3\left(-\frac{1}{4}+5\right)$$
$$-3\left(-\frac{1}{4}+\frac{20}{4}\right)$$
$$-3\times \frac{-1+20}{4}$$
$$-3\times \frac{19}{4}$$
$$\frac{-3\times 19}{4}$$
$$\frac{-57}{4}$$
$$-\frac{57}{4}$$
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$-\frac{57}{4} = -14\frac{1}{4} = -14.25$
