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Simplifying 8n + 5(4n + 5) = 81 Reorder the terms: 8n + 5(5 + 4n) = 81 8n + (5 * 5 + 4n * 5) = 81 8n + (25 + 20n) = 81 Reorder the terms: 25 + 8n + 20n = 81 Combine like terms: 8n + 20n = 28n 25 + 28n = 81 Solving 25 + 28n = 81 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + 28n = 81 + -25 Combine like terms: 25 + -25 = 0 0 + 28n = 81 + -25 28n = 81 + -25 Combine like terms: 81 + -25 = 56 28n = 56 Divide each side by '28'. n = 2 Simplifying n = 2
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