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Simplifying 2n + n + 1 + 3(n + 2) = 126 Reorder the terms: 2n + n + 1 + 3(2 + n) = 126 2n + n + 1 + (2 * 3 + n * 3) = 126 2n + n + 1 + (6 + 3n) = 126 Reorder the terms: 1 + 6 + 2n + n + 3n = 126 Combine like terms: 1 + 6 = 7 7 + 2n + n + 3n = 126 Combine like terms: 2n + n = 3n 7 + 3n + 3n = 126 Combine like terms: 3n + 3n = 6n 7 + 6n = 126 Solving 7 + 6n = 126 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 + 6n = 126 + -7 Combine like terms: 7 + -7 = 0 0 + 6n = 126 + -7 6n = 126 + -7 Combine like terms: 126 + -7 = 119 6n = 119 Divide each side by '6'. n = 19.83333333 Simplifying n = 19.83333333
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