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Simplifying -2(n + 1) + -4 = 12 Reorder the terms: -2(1 + n) + -4 = 12 (1 * -2 + n * -2) + -4 = 12 (-2 + -2n) + -4 = 12 Reorder the terms: -2 + -4 + -2n = 12 Combine like terms: -2 + -4 = -6 -6 + -2n = 12 Solving -6 + -2n = 12 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -2n = 12 + 6 Combine like terms: -6 + 6 = 0 0 + -2n = 12 + 6 -2n = 12 + 6 Combine like terms: 12 + 6 = 18 -2n = 18 Divide each side by '-2'. n = -9 Simplifying n = -9
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