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Simplifying 420.09 = 240 + 0.87x Solving 420.09 = 240 + 0.87x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.87x' to each side of the equation. 420.09 + -0.87x = 240 + 0.87x + -0.87x Combine like terms: 0.87x + -0.87x = 0.00 420.09 + -0.87x = 240 + 0.00 420.09 + -0.87x = 240 Add '-420.09' to each side of the equation. 420.09 + -420.09 + -0.87x = 240 + -420.09 Combine like terms: 420.09 + -420.09 = 0.00 0.00 + -0.87x = 240 + -420.09 -0.87x = 240 + -420.09 Combine like terms: 240 + -420.09 = -180.09 -0.87x = -180.09 Divide each side by '-0.87'. x = 207 Simplifying x = 207
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