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ADDITION AND SUBTRACTION OF RATIONALS

grade 8 Math

James1139
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ADDITION AND SUBTRACTION OF RATIONALS

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  1. ADDITION AND SUBTRACTION OF RATIONAL EXPRESSIONS CHAPTER 2 LESSON 2

  2. RECAP How do we add and subtract similar fractions? • Similar Fractions 1. Add or subtract the numerator then copy the common denominator. 2. Simplify, if possible. Example: + =

  3. Addition and subtraction of raTIONAL expressions • Recall how to add fractions such as and . + = = • The two fractions have the numerators of 3 and 4 and the common denominator 10. To get the sum of the fractions, add the numerators and retain the common denominator. This procedure illustrates the rules. + = and the same procedure with subtraction.

  4. EXAMPLE • Add or subtract. Then simplify your answer, if possible. • + • + • - • -

  5. SOLUTION Use the rule + = or - = • + = = • + = = = • - = = • - = = = = = 2

  6. Try this one! REFINING • Add or Subtract. Simplify your answer, if possible. • + • + • +

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