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Simplifying -2x = -2x + 7 Reorder the terms: -2x = 7 + -2x Add '2x' to each side of the equation. -2x + 2x = 7 + -2x + 2x Combine like terms: -2x + 2x = 0 0 = 7 + -2x + 2x Combine like terms: -2x + 2x = 0 0 = 7 + 0 0 = 7 Solving 0 = 7 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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