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Simplifying 12 + -2x = -2x + 4 Reorder the terms: 12 + -2x = 4 + -2x Add '2x' to each side of the equation. 12 + -2x + 2x = 4 + -2x + 2x Combine like terms: -2x + 2x = 0 12 + 0 = 4 + -2x + 2x 12 = 4 + -2x + 2x Combine like terms: -2x + 2x = 0 12 = 4 + 0 12 = 4 Solving 12 = 4 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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