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Simplifying n + (2n + 7) = 81 Reorder the terms: n + (7 + 2n) = 81 Remove parenthesis around (7 + 2n) n + 7 + 2n = 81 Reorder the terms: 7 + n + 2n = 81 Combine like terms: n + 2n = 3n 7 + 3n = 81 Solving 7 + 3n = 81 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 3n = 81 + -7 Combine like terms: 7 + -7 = 0 0 + 3n = 81 + -7 3n = 81 + -7 Combine like terms: 81 + -7 = 74 3n = 74 Divide each side by '3'. n = 24.66666667 Simplifying n = 24.66666667
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