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Simplifying -2.5x + 2.1 = -7.9 Reorder the terms: 2.1 + -2.5x = -7.9 Solving 2.1 + -2.5x = -7.9 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 + -2.5x = -7.9 + -2.1 Combine like terms: 2.1 + -2.1 = 0.0 0.0 + -2.5x = -7.9 + -2.1 -2.5x = -7.9 + -2.1 Combine like terms: -7.9 + -2.1 = -10 -2.5x = -10 Divide each side by '-2.5'. x = 4 Simplifying x = 4
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