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Simplifying (3 * 4n) + n = n Multiply 3 * 4 (12n) + n = n Combine like terms: (12n) + n = 13n 13n = n Solving 13n = n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1n' to each side of the equation. 13n + -1n = n + -1n Combine like terms: 13n + -1n = 12n 12n = n + -1n Combine like terms: n + -1n = 0 12n = 0 Divide each side by '12'. n = 0 Simplifying n = 0
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