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Simplifying -2(n + 9) = 45 Reorder the terms: -2(9 + n) = 45 (9 * -2 + n * -2) = 45 (-18 + -2n) = 45 Solving -18 + -2n = 45 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + -2n = 45 + 18 Combine like terms: -18 + 18 = 0 0 + -2n = 45 + 18 -2n = 45 + 18 Combine like terms: 45 + 18 = 63 -2n = 63 Divide each side by '-2'. n = -31.5 Simplifying n = -31.5
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