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Warm Up: Find the Least Common Denominator (LCM)

Warm Up: Find the Least Common Denominator (LCM). 9-5 Addition, Subtraction, and Complex Fractions. Ex 1: Perform the indicated operation. Note: In order to add or subtract 2 fractions, we must have the SAME DENOMINATOR. a. b. Ex 2: Find the LCD.

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Warm Up: Find the Least Common Denominator (LCM)

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  1. Warm Up: Find the Least Common Denominator (LCM)

  2. 9-5 Addition, Subtraction, and Complex Fractions

  3. Ex 1: Perform the indicated operation Note: In order to add or subtract 2 fractions, we must have the SAME DENOMINATOR. a. b.

  4. Ex 2: Find the LCD Ask yourself: Do the denominators have any factors in common? a. (You can leave it “unsimplified.”) In this example, there are no common factors. b. Note: Use ALL of the factors! Factor!

  5. Ex 3: Perform the indicated operation, then simplify Frist: Find the LCD Multiply each fraction by the factors it doesn’t already have.

  6. Ex 4: Perform the indicated operation and simplify.

  7. Exit Slip: Perform the indicated operation and simplify.

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