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Simplifying -3(2 + -1n) = 9 (2 * -3 + -1n * -3) = 9 (-6 + 3n) = 9 Solving -6 + 3n = 9 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 + 3n = 9 + 6 Combine like terms: -6 + 6 = 0 0 + 3n = 9 + 6 3n = 9 + 6 Combine like terms: 9 + 6 = 15 3n = 15 Divide each side by '3'. n = 5 Simplifying n = 5
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