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Simplifying 2(9 + 3n) = 4n + -2 (9 * 2 + 3n * 2) = 4n + -2 (18 + 6n) = 4n + -2 Reorder the terms: 18 + 6n = -2 + 4n Solving 18 + 6n = -2 + 4n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-4n' to each side of the equation. 18 + 6n + -4n = -2 + 4n + -4n Combine like terms: 6n + -4n = 2n 18 + 2n = -2 + 4n + -4n Combine like terms: 4n + -4n = 0 18 + 2n = -2 + 0 18 + 2n = -2 Add '-18' to each side of the equation. 18 + -18 + 2n = -2 + -18 Combine like terms: 18 + -18 = 0 0 + 2n = -2 + -18 2n = -2 + -18 Combine like terms: -2 + -18 = -20 2n = -20 Divide each side by '2'. n = -10 Simplifying n = -10
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