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Simplifying -2(7 + -1n) + 4 = 12 (7 * -2 + -1n * -2) + 4 = 12 (-14 + 2n) + 4 = 12 Reorder the terms: -14 + 4 + 2n = 12 Combine like terms: -14 + 4 = -10 -10 + 2n = 12 Solving -10 + 2n = 12 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + 2n = 12 + 10 Combine like terms: -10 + 10 = 0 0 + 2n = 12 + 10 2n = 12 + 10 Combine like terms: 12 + 10 = 22 2n = 22 Divide each side by '2'. n = 11 Simplifying n = 11
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