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