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Simplifying 8n + -21 = -30 + 5n Reorder the terms: -21 + 8n = -30 + 5n Solving -21 + 8n = -30 + 5n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-5n' to each side of the equation. -21 + 8n + -5n = -30 + 5n + -5n Combine like terms: 8n + -5n = 3n -21 + 3n = -30 + 5n + -5n Combine like terms: 5n + -5n = 0 -21 + 3n = -30 + 0 -21 + 3n = -30 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 = -9 3n = -9 Divide each side by '3'. n = -3 Simplifying n = -3
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