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Simplifying 8n + -21 = 3n + -1 Reorder the terms: -21 + 8n = 3n + -1 Reorder the terms: -21 + 8n = -1 + 3n Solving -21 + 8n = -1 + 3n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3n' to each side of the equation. -21 + 8n + -3n = -1 + 3n + -3n Combine like terms: 8n + -3n = 5n -21 + 5n = -1 + 3n + -3n Combine like terms: 3n + -3n = 0 -21 + 5n = -1 + 0 -21 + 5n = -1 Add '21' to each side of the equation. -21 + 21 + 5n = -1 + 21 Combine like terms: -21 + 21 = 0 0 + 5n = -1 + 21 5n = -1 + 21 Combine like terms: -1 + 21 = 20 5n = 20 Divide each side by '5'. n = 4 Simplifying n = 4
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