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Simplifying 9(n + 3) = 3(9 + 4n) Reorder the terms: 9(3 + n) = 3(9 + 4n) (3 * 9 + n * 9) = 3(9 + 4n) (27 + 9n) = 3(9 + 4n) 27 + 9n = (9 * 3 + 4n * 3) 27 + 9n = (27 + 12n) Add '-27' to each side of the equation. 27 + -27 + 9n = 27 + -27 + 12n Combine like terms: 27 + -27 = 0 0 + 9n = 27 + -27 + 12n 9n = 27 + -27 + 12n Combine like terms: 27 + -27 = 0 9n = 0 + 12n 9n = 12n Solving 9n = 12n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-12n' to each side of the equation. 9n + -12n = 12n + -12n Combine like terms: 9n + -12n = -3n -3n = 12n + -12n Combine like terms: 12n + -12n = 0 -3n = 0 Divide each side by '-3'. n = 0 Simplifying n = 0
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