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Simplifying 12n + 8 + -5n = 42 Reorder the terms: 8 + 12n + -5n = 42 Combine like terms: 12n + -5n = 7n 8 + 7n = 42 Solving 8 + 7n = 42 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 7n = 42 + -8 Combine like terms: 8 + -8 = 0 0 + 7n = 42 + -8 7n = 42 + -8 Combine like terms: 42 + -8 = 34 7n = 34 Divide each side by '7'. n = 4.857142857 Simplifying n = 4.857142857
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