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Simplifying 5n + 9 + 12 = 3 Reorder the terms: 9 + 12 + 5n = 3 Combine like terms: 9 + 12 = 21 21 + 5n = 3 Solving 21 + 5n = 3 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 5n = 3 + -21 Combine like terms: 21 + -21 = 0 0 + 5n = 3 + -21 5n = 3 + -21 Combine like terms: 3 + -21 = -18 5n = -18 Divide each side by '5'. n = -3.6 Simplifying n = -3.6
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