$$(-8)\times(\frac{-12}{13})=(\frac{-12}{13})\times(-8)$$
$\text{true}$
$$\frac{-12}{13}=\frac{-12}{13}$$
$$-\frac{12}{13}=\frac{-12}{13}$$
$$-\frac{12}{13}=-\frac{12}{13}$$
$$\text{true}$$
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