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Simplifying x + x + 2 + (x + 2) * 9 = 251 Reorder the terms: x + x + 2 + (2 + x) * 9 = 251 Reorder the terms for easier multiplication: x + x + 2 + 9(2 + x) = 251 x + x + 2 + (2 * 9 + x * 9) = 251 x + x + 2 + (18 + 9x) = 251 Reorder the terms: 2 + 18 + x + x + 9x = 251 Combine like terms: 2 + 18 = 20 20 + x + x + 9x = 251 Combine like terms: x + x = 2x 20 + 2x + 9x = 251 Combine like terms: 2x + 9x = 11x 20 + 11x = 251 Solving 20 + 11x = 251 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + 11x = 251 + -20 Combine like terms: 20 + -20 = 0 0 + 11x = 251 + -20 11x = 251 + -20 Combine like terms: 251 + -20 = 231 11x = 231 Divide each side by '11'. x = 21 Simplifying x = 21
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