$\"\"$

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The expression is $\"\"$

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$\"\"$ (Distributive property: $\"\"$ )

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

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

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

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

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$\"\"$

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$\"\"$ (Combine like items using commutative

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property of addition: $\"\"$ ).

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$\"\"$ (Distributive property: $\"\"$ ).

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$

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The simplified expression is $\"\"$ .