9.5 Addition, Subtraction, and Complex Fractions

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9.5 Addition, Subtraction, and Complex Fractions

• (p. 562)

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Remember When adding or subtracting fractions,
you need a common denominator!
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Examples
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Example
Needs a common denominator 1st! Sometimes it
helps to factor the denominators to make it
easier to find your LCD.
LCD 3x3(2x1)
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Example
LCD (x3)2(x-3)
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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!

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Steps to make complex fractions easier.

1. Condense the numerator and denominator into one
   fraction each. (if necessary)
2. Multiply the numerator by the denominator.
3. Simplify the remaining fraction.

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Example
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Example
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Last Example
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Assignment