Numerator with a negative sign, negative 1 as a denominator
If the numerator of a fraction has a negative sign and its denominator is negative 1, then the negative sign of the numerator cancels out the negative 1 in the denominator.
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If the numerator of a fraction has a negative sign and its denominator is negative 1, then the negative sign of the numerator cancels out the negative 1 in the denominator.