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Simplifying 2.1x + -0.4 = 14.3 Reorder the terms: -0.4 + 2.1x = 14.3 Solving -0.4 + 2.1x = 14.3 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + 2.1x = 14.3 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + 2.1x = 14.3 + 0.4 2.1x = 14.3 + 0.4 Combine like terms: 14.3 + 0.4 = 14.7 2.1x = 14.7 Divide each side by '2.1'. x = 7 Simplifying x = 7
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