MediumRational expressions

OpenStax, Intermediate Algebra 2e §7.3 Simplify Complex Rational Expressions · Exercise 46 · Algebra · Rational expressions

Simplify Complex Rational Expressions · Exercise 46

Efraim wants to start simplifying the complex fraction $\frac{\frac{1}{a} + \frac{1}{b}}{\frac{1}{a} - \frac{1}{b}}$ by cancelling the variables from the numerator and denominator, $\frac{\frac{1}{a} + \frac{1}{b}}{\frac{1}{a} - \frac{1}{b}} .$ Explain what is wrong with Efraim’s plan.

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OpenStax, Intermediate Algebra 2e · §7.3 Simplify Complex Rational Expressions · Exercise 46

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