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§ 2.7

§ 2.7. Adding and Subtracting Fractions. Fractions with Common Denominators . Fractions must have common denominators before they can be added or subtracted. +. =. Example : Add . Fractions with Different Denominators .

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§ 2.7

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  1. § 2.7 Adding and Subtracting Fractions

  2. Fractions with Common Denominators Fractions must have common denominators before they can be added or subtracted. + =

  3. Example: Add . Fractions with Different Denominators If fractions have different denominators, find the LCD and build up each fraction so that its denominator is the LCD. LCD = 24

  4. Example: Subtract . Fractions with Different Denominators LCD = 60

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