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Simplifying 2n + 7 + n + 2 = 0 Reorder the terms: 7 + 2 + 2n + n = 0 Combine like terms: 7 + 2 = 9 9 + 2n + n = 0 Combine like terms: 2n + n = 3n 9 + 3n = 0 Solving 9 + 3n = 0 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 3n = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 3n = 0 + -9 3n = 0 + -9 Combine like terms: 0 + -9 = -9 3n = -9 Divide each side by '3'. n = -3 Simplifying n = -3
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