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Simplifying 2n + 7 + n = 45 Reorder the terms: 7 + 2n + n = 45 Combine like terms: 2n + n = 3n 7 + 3n = 45 Solving 7 + 3n = 45 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 + 3n = 45 + -7 Combine like terms: 7 + -7 = 0 0 + 3n = 45 + -7 3n = 45 + -7 Combine like terms: 45 + -7 = 38 3n = 38 Divide each side by '3'. n = 12.66666667 Simplifying n = 12.66666667
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