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Simplifying -9(n + -2) = -171 Reorder the terms: -9(-2 + n) = -171 (-2 * -9 + n * -9) = -171 (18 + -9n) = -171 Solving 18 + -9n = -171 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + -9n = -171 + -18 Combine like terms: 18 + -18 = 0 0 + -9n = -171 + -18 -9n = -171 + -18 Combine like terms: -171 + -18 = -189 -9n = -189 Divide each side by '-9'. n = 21 Simplifying n = 21
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