$\"\"$

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The expression is $\"\"$ .

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Write the expression as sum: $\"\"$

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Terms: $\"\"$

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Like terms: $\"\"$

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Coefficients: –3, 3

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Constant terms: –7, 9 $\"\"$

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Terms: $\"\"$

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Like terms: $\"\"$

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Coefficients: –3, 3

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Constant terms: –7, 9