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Simplifying n + 12 = 3n Reorder the terms: 12 + n = 3n Solving 12 + n = 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 + n + -3n = 3n + -3n Combine like terms: n + -3n = -2n 12 + -2n = 3n + -3n Combine like terms: 3n + -3n = 0 12 + -2n = 0 Add '-12' to each side of the equation. 12 + -12 + -2n = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -2n = 0 + -12 -2n = 0 + -12 Combine like terms: 0 + -12 = -12 -2n = -12 Divide each side by '-2'. n = 6 Simplifying n = 6
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