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Simplifying n + n + 3 = 23 Reorder the terms: 3 + n + n = 23 Combine like terms: n + n = 2n 3 + 2n = 23 Solving 3 + 2n = 23 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 + 2n = 23 + -3 Combine like terms: 3 + -3 = 0 0 + 2n = 23 + -3 2n = 23 + -3 Combine like terms: 23 + -3 = 20 2n = 20 Divide each side by '2'. n = 10 Simplifying n = 10
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