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Simplifying -8n + 7(4n + 3) = 121 Reorder the terms: -8n + 7(3 + 4n) = 121 -8n + (3 * 7 + 4n * 7) = 121 -8n + (21 + 28n) = 121 Reorder the terms: 21 + -8n + 28n = 121 Combine like terms: -8n + 28n = 20n 21 + 20n = 121 Solving 21 + 20n = 121 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 + 20n = 121 + -21 Combine like terms: 21 + -21 = 0 0 + 20n = 121 + -21 20n = 121 + -21 Combine like terms: 121 + -21 = 100 20n = 100 Divide each side by '20'. n = 5 Simplifying n = 5
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