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Simplifying 3.5 = -0.4x Solving 3.5 = -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. 3.5 + 0.4x = -0.4x + 0.4x Combine like terms: -0.4x + 0.4x = 0.0 3.5 + 0.4x = 0.0 Add '-3.5' to each side of the equation. 3.5 + -3.5 + 0.4x = 0.0 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + 0.4x = 0.0 + -3.5 0.4x = 0.0 + -3.5 Combine like terms: 0.0 + -3.5 = -3.5 0.4x = -3.5 Divide each side by '0.4'. x = -8.75 Simplifying x = -8.75
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