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Simplifying n + (n + 1) + (n + 2) = 81 Reorder the terms: n + (1 + n) + (n + 2) = 81 Remove parenthesis around (1 + n) n + 1 + n + (n + 2) = 81 Reorder the terms: n + 1 + n + (2 + n) = 81 Remove parenthesis around (2 + n) n + 1 + n + 2 + n = 81 Reorder the terms: 1 + 2 + n + n + n = 81 Combine like terms: 1 + 2 = 3 3 + n + n + n = 81 Combine like terms: n + n = 2n 3 + 2n + n = 81 Combine like terms: 2n + n = 3n 3 + 3n = 81 Solving 3 + 3n = 81 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 3n = 81 + -3 Combine like terms: 3 + -3 = 0 0 + 3n = 81 + -3 3n = 81 + -3 Combine like terms: 81 + -3 = 78 3n = 78 Divide each side by '3'. n = 26 Simplifying n = 26
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