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Simplifying -1(n + 4) = -84 Reorder the terms: -1(4 + n) = -84 (4 * -1 + n * -1) = -84 (-4 + -1n) = -84 Solving -4 + -1n = -84 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1n = -84 + 4 Combine like terms: -4 + 4 = 0 0 + -1n = -84 + 4 -1n = -84 + 4 Combine like terms: -84 + 4 = -80 -1n = -80 Divide each side by '-1'. n = 80 Simplifying n = 80
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