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Simplifying -4(2n + 9) = -20 Reorder the terms: -4(9 + 2n) = -20 (9 * -4 + 2n * -4) = -20 (-36 + -8n) = -20 Solving -36 + -8n = -20 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + -8n = -20 + 36 Combine like terms: -36 + 36 = 0 0 + -8n = -20 + 36 -8n = -20 + 36 Combine like terms: -20 + 36 = 16 -8n = 16 Divide each side by '-8'. n = -2 Simplifying n = -2
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