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Simplifying 2.1x + 1.9 = 18.7 Reorder the terms: 1.9 + 2.1x = 18.7 Solving 1.9 + 2.1x = 18.7 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.9' to each side of the equation. 1.9 + -1.9 + 2.1x = 18.7 + -1.9 Combine like terms: 1.9 + -1.9 = 0.0 0.0 + 2.1x = 18.7 + -1.9 2.1x = 18.7 + -1.9 Combine like terms: 18.7 + -1.9 = 16.8 2.1x = 16.8 Divide each side by '2.1'. x = 8 Simplifying x = 8
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