\"\"\"\"

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The expression is \"\".

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Rearrange the terms using the distributive property: \"\".

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\"\"                   (Distribute 3)

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

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\"\"                       (Apply distributive property: ab + ac = (b + c)a)

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\"\"                                       (Add: 3 + 1 = 4)\"\"

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The simplified expression is \"\".