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Simplifying 4n + -2n + 9 = -31 Reorder the terms: 9 + 4n + -2n = -31 Combine like terms: 4n + -2n = 2n 9 + 2n = -31 Solving 9 + 2n = -31 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 + 2n = -31 + -9 Combine like terms: 9 + -9 = 0 0 + 2n = -31 + -9 2n = -31 + -9 Combine like terms: -31 + -9 = -40 2n = -40 Divide each side by '2'. n = -20 Simplifying n = -20
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