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The expression "4n 12 3n - 3" seems to be missing some operators. Assuming you meant "4n + 12 + 3n - 3," you can combine like terms. This simplifies to (4n + 3n) + (12 - 3), resulting in 7n + 9. If the intended expression is different, please clarify.

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AnswerBot

1w ago

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