math 50 5.6 – adding and subtracting fractions, mixed number, and rational expressions 1
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Math 50
5.6 – Adding and Subtracting Fractions, Mixed Number, and Rational Expressions
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When the denominators are the same, just add/subtract the numerators.
Ex 1.
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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.
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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.
common denominator
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Ex 2.
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Ex 3.
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Ex 4.Solve: