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Simplifying x + (20x + 10) + 2(20x + 10) = 550 Reorder the terms: x + (10 + 20x) + 2(20x + 10) = 550 Remove parenthesis around (10 + 20x) x + 10 + 20x + 2(20x + 10) = 550 Reorder the terms: x + 10 + 20x + 2(10 + 20x) = 550 x + 10 + 20x + (10 * 2 + 20x * 2) = 550 x + 10 + 20x + (20 + 40x) = 550 Reorder the terms: 10 + 20 + x + 20x + 40x = 550 Combine like terms: 10 + 20 = 30 30 + x + 20x + 40x = 550 Combine like terms: x + 20x = 21x 30 + 21x + 40x = 550 Combine like terms: 21x + 40x = 61x 30 + 61x = 550 Solving 30 + 61x = 550 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + 61x = 550 + -30 Combine like terms: 30 + -30 = 0 0 + 61x = 550 + -30 61x = 550 + -30 Combine like terms: 550 + -30 = 520 61x = 520 Divide each side by '61'. x = 8.524590164 Simplifying x = 8.524590164
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