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Simplifying 9(-1n + 2) = -12n Reorder the terms: 9(2 + -1n) = -12n (2 * 9 + -1n * 9) = -12n (18 + -9n) = -12n Solving 18 + -9n = -12n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '12n' to each side of the equation. 18 + -9n + 12n = -12n + 12n Combine like terms: -9n + 12n = 3n 18 + 3n = -12n + 12n Combine like terms: -12n + 12n = 0 18 + 3n = 0 Add '-18' to each side of the equation. 18 + -18 + 3n = 0 + -18 Combine like terms: 18 + -18 = 0 0 + 3n = 0 + -18 3n = 0 + -18 Combine like terms: 0 + -18 = -18 3n = -18 Divide each side by '3'. n = -6 Simplifying n = -6
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