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Simplifying 9n + 12 = 7n + -3 Reorder the terms: 12 + 9n = 7n + -3 Reorder the terms: 12 + 9n = -3 + 7n Solving 12 + 9n = -3 + 7n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7n' to each side of the equation. 12 + 9n + -7n = -3 + 7n + -7n Combine like terms: 9n + -7n = 2n 12 + 2n = -3 + 7n + -7n Combine like terms: 7n + -7n = 0 12 + 2n = -3 + 0 12 + 2n = -3 Add '-12' to each side of the equation. 12 + -12 + 2n = -3 + -12 Combine like terms: 12 + -12 = 0 0 + 2n = -3 + -12 2n = -3 + -12 Combine like terms: -3 + -12 = -15 2n = -15 Divide each side by '2'. n = -7.5 Simplifying n = -7.5
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