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Simplifying -28 + 7n = 9(2n + 3) Reorder the terms: -28 + 7n = 9(3 + 2n) -28 + 7n = (3 * 9 + 2n * 9) -28 + 7n = (27 + 18n) Solving -28 + 7n = 27 + 18n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-18n' to each side of the equation. -28 + 7n + -18n = 27 + 18n + -18n Combine like terms: 7n + -18n = -11n -28 + -11n = 27 + 18n + -18n Combine like terms: 18n + -18n = 0 -28 + -11n = 27 + 0 -28 + -11n = 27 Add '28' to each side of the equation. -28 + 28 + -11n = 27 + 28 Combine like terms: -28 + 28 = 0 0 + -11n = 27 + 28 -11n = 27 + 28 Combine like terms: 27 + 28 = 55 -11n = 55 Divide each side by '-11'. n = -5 Simplifying n = -5
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