1. Math 50 5.6 – Adding and Subtracting Fractions, Mixed Number, and Rational Expressions 1

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3. To add/subtract fractions with different denominators, we need to rewrite them so they have a ____________________. In particular, the LCD is a common denominator that helps keeps all the numbers small. 3

4. To add/subtract fractions with different denominators, we need to rewrite them so they have a ____________________. In particular, the LCD is a common denominator that helps keeps all the numbers small. 4 common denominator

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