How does (-2x+1)(x=9)/(4x-3)(x=9) = 1-2x/4x-3, why is the answer switched to 1-2x instead of -2x+1 for the numerator? ****

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by luvbSingle at July 29, 2012

Example is above with the *** above it, how did you get that answer (is this the commutative property that is being used in this problem.