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Simplifying 7n + 3 = 12 + -2n Reorder the terms: 3 + 7n = 12 + -2n Solving 3 + 7n = 12 + -2n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2n' to each side of the equation. 3 + 7n + 2n = 12 + -2n + 2n Combine like terms: 7n + 2n = 9n 3 + 9n = 12 + -2n + 2n Combine like terms: -2n + 2n = 0 3 + 9n = 12 + 0 3 + 9n = 12 Add '-3' to each side of the equation. 3 + -3 + 9n = 12 + -3 Combine like terms: 3 + -3 = 0 0 + 9n = 12 + -3 9n = 12 + -3 Combine like terms: 12 + -3 = 9 9n = 9 Divide each side by '9'. n = 1 Simplifying n = 1
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