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Simplifying (x + 1) * 2 = 81 Reorder the terms: (1 + x) * 2 = 81 Reorder the terms for easier multiplication: 2(1 + x) = 81 (1 * 2 + x * 2) = 81 (2 + 2x) = 81 Solving 2 + 2x = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 2x = 81 + -2 Combine like terms: 2 + -2 = 0 0 + 2x = 81 + -2 2x = 81 + -2 Combine like terms: 81 + -2 = 79 2x = 79 Divide each side by '2'. x = 39.5 Simplifying x = 39.5
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