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Simplifying 3(n + 7) = -30 Reorder the terms: 3(7 + n) = -30 (7 * 3 + n * 3) = -30 (21 + 3n) = -30 Solving 21 + 3n = -30 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 3n = -30 + -21 Combine like terms: 21 + -21 = 0 0 + 3n = -30 + -21 3n = -30 + -21 Combine like terms: -30 + -21 = -51 3n = -51 Divide each side by '3'. n = -17 Simplifying n = -17
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