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Simplifying 3.9 = 4.9 + -0.5x Solving 3.9 = 4.9 + -0.5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5x' to each side of the equation. 3.9 + 0.5x = 4.9 + -0.5x + 0.5x Combine like terms: -0.5x + 0.5x = 0.0 3.9 + 0.5x = 4.9 + 0.0 3.9 + 0.5x = 4.9 Add '-3.9' to each side of the equation. 3.9 + -3.9 + 0.5x = 4.9 + -3.9 Combine like terms: 3.9 + -3.9 = 0.0 0.0 + 0.5x = 4.9 + -3.9 0.5x = 4.9 + -3.9 Combine like terms: 4.9 + -3.9 = 1 0.5x = 1 Divide each side by '0.5'. x = 2 Simplifying x = 2
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