Question: IW 7.4 Adding and Subtracting Rational Expre Subtract. Simplify, if possible. (81)/(b+45)-(14)/(b+45) The difference is

IW 7.4 Adding and Subtracting Rational Expre Subtract. Simplify, if possible. (81)/(b+45)-(14)/(b+45) The difference is

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