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Simplifying 9(3n + -5) = (9n + 9) + 4 Reorder the terms: 9(-5 + 3n) = (9n + 9) + 4 (-5 * 9 + 3n * 9) = (9n + 9) + 4 (-45 + 27n) = (9n + 9) + 4 Reorder the terms: -45 + 27n = (9 + 9n) + 4 Remove parenthesis around (9 + 9n) -45 + 27n = 9 + 9n + 4 Reorder the terms: -45 + 27n = 9 + 4 + 9n Combine like terms: 9 + 4 = 13 -45 + 27n = 13 + 9n Solving -45 + 27n = 13 + 9n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-9n' to each side of the equation. -45 + 27n + -9n = 13 + 9n + -9n Combine like terms: 27n + -9n = 18n -45 + 18n = 13 + 9n + -9n Combine like terms: 9n + -9n = 0 -45 + 18n = 13 + 0 -45 + 18n = 13 Add '45' to each side of the equation. -45 + 45 + 18n = 13 + 45 Combine like terms: -45 + 45 = 0 0 + 18n = 13 + 45 18n = 13 + 45 Combine like terms: 13 + 45 = 58 18n = 58 Divide each side by '18'. n = 3.222222222 Simplifying n = 3.222222222
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