Adding and Subtracting unlike denominators

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What is the sum of 4 2/5 and 1 3/8?

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5 17/40

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1

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1/3

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1 1/10

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19/22

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What is a common denominator?

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A common denominator is a number that is a multiple of the denominators of two or more fractions.

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The common denominator is 6.

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What is the first step in adding fractions with unlike denominators?

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Find a common denominator.

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