$\"\"$

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The expression is $\"\"$

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$\"\"$

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

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

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

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$\"\"$ (Commutative pro perty: $\"\"$ )

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

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$\"\"$ (Add: $\"\"$ ) \ \ $\"\"$

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The simplified expression is $\"\"$ .