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Simplifying 2.1x + 3.5 = -12.6 Reorder the terms: 3.5 + 2.1x = -12.6 Solving 3.5 + 2.1x = -12.6 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + 2.1x = -12.6 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + 2.1x = -12.6 + -3.5 2.1x = -12.6 + -3.5 Combine like terms: -12.6 + -3.5 = -16.1 2.1x = -16.1 Divide each side by '2.1'. x = -7.666666667 Simplifying x = -7.666666667
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