$$(\frac{3}{4}-\frac{2}{3})-(-\frac{1}{6})$$
$\frac{1}{4}=0.25$
$$\frac{9}{12}-\frac{8}{12}-\left(-\frac{1}{6}\right)$$
$$\frac{9-8}{12}-\left(-\frac{1}{6}\right)$$
$$\frac{1}{12}-\left(-\frac{1}{6}\right)$$
$$\frac{1}{12}+\frac{1}{6}$$
$$\frac{1}{12}+\frac{2}{12}$$
$$\frac{1+2}{12}$$
$$\frac{3}{12}$$
$$\frac{1}{4}$$
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$\frac{1}{2 ^ {2}} = 0.25$
