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Simplifying 20 = 39.85(1 + -1x) 20 = (1 * 39.85 + -1x * 39.85) 20 = (39.85 + -39.85x) Solving 20 = 39.85 + -39.85x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '39.85x' to each side of the equation. 20 + 39.85x = 39.85 + -39.85x + 39.85x Combine like terms: -39.85x + 39.85x = 0.00 20 + 39.85x = 39.85 + 0.00 20 + 39.85x = 39.85 Add '-20' to each side of the equation. 20 + -20 + 39.85x = 39.85 + -20 Combine like terms: 20 + -20 = 0 0 + 39.85x = 39.85 + -20 39.85x = 39.85 + -20 Combine like terms: 39.85 + -20 = 19.85 39.85x = 19.85 Divide each side by '39.85'. x = 0.4981179423 Simplifying x = 0.4981179423
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