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Simplifying 1.20x + -1.40 = 0.80x Reorder the terms: -1.40 + 1.20x = 0.80x Solving -1.40 + 1.20x = 0.80x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.80x' to each side of the equation. -1.40 + 1.20x + -0.80x = 0.80x + -0.80x Combine like terms: 1.20x + -0.80x = 0.4x -1.40 + 0.4x = 0.80x + -0.80x Combine like terms: 0.80x + -0.80x = 0.00 -1.40 + 0.4x = 0.00 Add '1.40' to each side of the equation. -1.40 + 1.40 + 0.4x = 0.00 + 1.40 Combine like terms: -1.40 + 1.40 = 0.00 0.00 + 0.4x = 0.00 + 1.40 0.4x = 0.00 + 1.40 Combine like terms: 0.00 + 1.40 = 1.4 0.4x = 1.4 Divide each side by '0.4'. x = 3.5 Simplifying x = 3.5
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