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Simplifying n + n + n + 1 = 12 Reorder the terms: 1 + n + n + n = 12 Combine like terms: n + n = 2n 1 + 2n + n = 12 Combine like terms: 2n + n = 3n 1 + 3n = 12 Solving 1 + 3n = 12 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 3n = 12 + -1 Combine like terms: 1 + -1 = 0 0 + 3n = 12 + -1 3n = 12 + -1 Combine like terms: 12 + -1 = 11 3n = 11 Divide each side by '3'. n = 3.666666667 Simplifying n = 3.666666667
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