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Simplifying 2n + -12 = 3n + 9 Reorder the terms: -12 + 2n = 3n + 9 Reorder the terms: -12 + 2n = 9 + 3n Solving -12 + 2n = 9 + 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. -12 + 2n + -3n = 9 + 3n + -3n Combine like terms: 2n + -3n = -1n -12 + -1n = 9 + 3n + -3n Combine like terms: 3n + -3n = 0 -12 + -1n = 9 + 0 -12 + -1n = 9 Add '12' to each side of the equation. -12 + 12 + -1n = 9 + 12 Combine like terms: -12 + 12 = 0 0 + -1n = 9 + 12 -1n = 9 + 12 Combine like terms: 9 + 12 = 21 -1n = 21 Divide each side by '-1'. n = -21 Simplifying n = -21
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