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Simplifying n + 2n + 30 = 180 Reorder the terms: 30 + n + 2n = 180 Combine like terms: n + 2n = 3n 30 + 3n = 180 Solving 30 + 3n = 180 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + 3n = 180 + -30 Combine like terms: 30 + -30 = 0 0 + 3n = 180 + -30 3n = 180 + -30 Combine like terms: 180 + -30 = 150 3n = 150 Divide each side by '3'. n = 50 Simplifying n = 50
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