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Simplifying 7(n + 4) + 7 = 84 Reorder the terms: 7(4 + n) + 7 = 84 (4 * 7 + n * 7) + 7 = 84 (28 + 7n) + 7 = 84 Reorder the terms: 28 + 7 + 7n = 84 Combine like terms: 28 + 7 = 35 35 + 7n = 84 Solving 35 + 7n = 84 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-35' to each side of the equation. 35 + -35 + 7n = 84 + -35 Combine like terms: 35 + -35 = 0 0 + 7n = 84 + -35 7n = 84 + -35 Combine like terms: 84 + -35 = 49 7n = 49 Divide each side by '7'. n = 7 Simplifying n = 7
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