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Simplifying 9(n + 2) = 135 Reorder the terms: 9(2 + n) = 135 (2 * 9 + n * 9) = 135 (18 + 9n) = 135 Solving 18 + 9n = 135 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 = 135 + -18 Combine like terms: 18 + -18 = 0 0 + 9n = 135 + -18 9n = 135 + -18 Combine like terms: 135 + -18 = 117 9n = 117 Divide each side by '9'. n = 13 Simplifying n = 13
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