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Subtracting Rational Expressions

Subtracting Rational Expressions. Step 1 Common Denominator. You need to find the least common denominator. (If the rational expressions already have a common denominator then subtract the numerators across the top.). The common denominator is x(x-6)(x+6). Step 2 Top and bottom.

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Subtracting Rational Expressions

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  1. Subtracting Rational Expressions

  2. Step 1 Common Denominator • You need to find the least common denominator. (If the rational expressions already have a common denominator then subtract the numerators across the top.) The common denominator is x(x-6)(x+6)

  3. Step 2 Top and bottom • You need to multiply the numerator by the same number you multiplied the denominator with.

  4. Step 3 Subtract Numerators

  5. Step 4 simplify

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