$\"\"$

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The expression is $\"\"$

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$\"\"$ can be written as $\"\"$

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$\"\"$ can be written as $\"\"$

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$\"\"$

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$\"\"$ (Apply commutative property of multiplication: $\"\"$ )

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$\"\"$ (Multiply: $\"\"$ )

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$\"\"$ (Multiply: $\"\"$ ) $\"\"$

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The simplified expression is $\"\"$ .