$$3=|1-\frac{1}{4}-7|=$$
$\text{false}$
$$3=|\frac{4}{4}-\frac{1}{4}-7|$$
$$3=|\frac{4-1}{4}-7|$$
$$3=|\frac{3}{4}-7|$$
$$3=|\frac{3}{4}-\frac{28}{4}|$$
$$3=|\frac{3-28}{4}|$$
$$3=|-\frac{25}{4}|$$
$$3=\frac{25}{4}$$
$$\frac{12}{4}=\frac{25}{4}$$
$$\text{false}$$
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