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Simplifying 7n + 9 = 3n + 7 Reorder the terms: 9 + 7n = 3n + 7 Reorder the terms: 9 + 7n = 7 + 3n Solving 9 + 7n = 7 + 3n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3n' to each side of the equation. 9 + 7n + -3n = 7 + 3n + -3n Combine like terms: 7n + -3n = 4n 9 + 4n = 7 + 3n + -3n Combine like terms: 3n + -3n = 0 9 + 4n = 7 + 0 9 + 4n = 7 Add '-9' to each side of the equation. 9 + -9 + 4n = 7 + -9 Combine like terms: 9 + -9 = 0 0 + 4n = 7 + -9 4n = 7 + -9 Combine like terms: 7 + -9 = -2 4n = -2 Divide each side by '4'. n = -0.5 Simplifying n = -0.5
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