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Simplifying 420 = 0.4x Solving 420 = 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. 420 + -0.4x = 0.4x + -0.4x Combine like terms: 0.4x + -0.4x = 0.0 420 + -0.4x = 0.0 Add '-420' to each side of the equation. 420 + -420 + -0.4x = 0.0 + -420 Combine like terms: 420 + -420 = 0 0 + -0.4x = 0.0 + -420 -0.4x = 0.0 + -420 Combine like terms: 0.0 + -420 = -420 -0.4x = -420 Divide each side by '-0.4'. x = 1050 Simplifying x = 1050
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