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Procedure to Simplify a Complex Rational Expression by Writing it as Division
To simplify a complex rational expression by rewriting it as a division problem, follow a three-step procedure:
Step 1. Simplify the numerator and the denominator separately. Perform any necessary addition or subtraction so that the overall numerator is a single rational expression and the overall denominator is a single rational expression.
Step 2. Rewrite the complex rational expression as a division problem. Replace the main fraction bar with a division sign (), placing the simplified numerator before it and the simplified denominator after it.
Step 3. Divide the expressions. Multiply the first rational expression by the reciprocal of the second. Factor all numerators and denominators completely, and simplify the final result by dividing out any common factors.
Because the main fraction bar acts as a grouping symbol, it is crucial to fully consolidate both the top and bottom expressions (Step 1) before performing the division (Steps 2 and 3).
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Procedure to Simplify a Complex Rational Expression by Writing it as Division
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Simplifying
Simplifying
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Example 7.27: Simplifying by Writing it as Division
Try It 7.53: Simplifying by Writing it as Division
Try It 7.54: Simplifying by Writing it as Division