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Simplifying 2.2x + (x + 20) = 513 Reorder the terms: 2.2x + (20 + x) = 513 Remove parenthesis around (20 + x) 2.2x + 20 + x = 513 Reorder the terms: 20 + 2.2x + x = 513 Combine like terms: 2.2x + x = 3.2x 20 + 3.2x = 513 Solving 20 + 3.2x = 513 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 + 3.2x = 513 + -20 Combine like terms: 20 + -20 = 0 0 + 3.2x = 513 + -20 3.2x = 513 + -20 Combine like terms: 513 + -20 = 493 3.2x = 493 Divide each side by '3.2'. x = 154.0625 Simplifying x = 154.0625
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