9 5 addition subtraction and complex fractions
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9.5 Addition, Subtraction, and Complex Fractions PowerPoint PPT Presentation


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9.5 Addition, Subtraction, and Complex Fractions. (p. 562). Remember : When adding or subtracting fractions, you need a common denominator!. Examples:. Example:. ** Needs a common denominator 1 st ! Sometimes it helps to factor the denominators to make it easier to find your LCD.

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9.5 Addition, Subtraction, and Complex Fractions

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9.5 Addition, Subtraction, and Complex Fractions

(p. 562)


Remember: When adding or subtracting fractions, you need a common denominator!


Examples:


Example:

** Needs a common denominator 1st! Sometimes it helps to factor the denominators to make it easier to find your LCD.

LCD: 3x3(2x+1)


Example:

LCD: (x+3)2(x-3)


Assignment


Complex Fraction – a fraction with a fraction in the numerator and/or denominator.

Such as:

How would you simplify this complex fraction?

Multiply the top by the reciprocal of the bottom!


Steps to make complex fractions easier.

  • Condense the numerator and denominator into one fraction each. (if necessary)

  • Multiply the numerator by the denominator.

  • Simplify the remaining fraction.


Example:


Example:


Last Example:


Assignment


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