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Simplifying 2(x + -2.1) = 4.2 Reorder the terms: 2(-2.1 + x) = 4.2 (-2.1 * 2 + x * 2) = 4.2 (-4.2 + 2x) = 4.2 Solving -4.2 + 2x = 4.2 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.2' to each side of the equation. -4.2 + 4.2 + 2x = 4.2 + 4.2 Combine like terms: -4.2 + 4.2 = 0.0 0.0 + 2x = 4.2 + 4.2 2x = 4.2 + 4.2 Combine like terms: 4.2 + 4.2 = 8.4 2x = 8.4 Divide each side by '2'. x = 4.2 Simplifying x = 4.2
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