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Solving Rational Equations

# Solving Rational Equations - Solving Rational Equations...

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Solving Rational Equations Step 1 : Simplify by removing the fractions. multiplying both sides by the LCD. If you need a review on finding the LCD of a rational expression, go to Tutorial 10: Adding and Subtracting Rational Expressions. Note that even though this is not the same as adding and subtracting rational expressions, you still find the LCD in the same manner. So if you go to this link, just look at finding the LCD, NOT adding and subtracting rational expressions. Step 2 : Solve the remaining equation. In this tutorial the remaining equations will all be linear. If you need a review on solving linear equations go back to Tutorial 14: Linear Equations. Step 3 : Check for extraneous solutions. For rational equations, extraneous solutions are values that cause any denominator in the original problem to be 0. Of course, when we have 0 in the denominator we have an expression that is undefined. So, we would have to throw out any values that would cause the denominator to be 0.

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