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Simplifying -2.1 + -5x = 12.4 Solving -2.1 + -5x = 12.4 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.1' to each side of the equation. -2.1 + 2.1 + -5x = 12.4 + 2.1 Combine like terms: -2.1 + 2.1 = 0.0 0.0 + -5x = 12.4 + 2.1 -5x = 12.4 + 2.1 Combine like terms: 12.4 + 2.1 = 14.5 -5x = 14.5 Divide each side by '-5'. x = -2.9 Simplifying x = -2.9
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