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Simplifying -1.8 = 0.4x Solving -1.8 = 0.4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4x' to each side of the equation. -1.8 + -0.4x = 0.4x + -0.4x Combine like terms: 0.4x + -0.4x = 0.0 -1.8 + -0.4x = 0.0 Add '1.8' to each side of the equation. -1.8 + 1.8 + -0.4x = 0.0 + 1.8 Combine like terms: -1.8 + 1.8 = 0.0 0.0 + -0.4x = 0.0 + 1.8 -0.4x = 0.0 + 1.8 Combine like terms: 0.0 + 1.8 = 1.8 -0.4x = 1.8 Divide each side by '-0.4'. x = -4.5 Simplifying x = -4.5
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