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Simplifying 3(n + 5) = -21 Reorder the terms: 3(5 + n) = -21 (5 * 3 + n * 3) = -21 (15 + 3n) = -21 Solving 15 + 3n = -21 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + 3n = -21 + -15 Combine like terms: 15 + -15 = 0 0 + 3n = -21 + -15 3n = -21 + -15 Combine like terms: -21 + -15 = -36 3n = -36 Divide each side by '3'. n = -12 Simplifying n = -12
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