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Simplifying 2x + -9 = 2x + -4 Reorder the terms: -9 + 2x = 2x + -4 Reorder the terms: -9 + 2x = -4 + 2x Add '-2x' to each side of the equation. -9 + 2x + -2x = -4 + 2x + -2x Combine like terms: 2x + -2x = 0 -9 + 0 = -4 + 2x + -2x -9 = -4 + 2x + -2x Combine like terms: 2x + -2x = 0 -9 = -4 + 0 -9 = -4 Solving -9 = -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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