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Simplifying 5 + 2x + -9 = 7x + 4 + -5x Reorder the terms: 5 + -9 + 2x = 7x + 4 + -5x Combine like terms: 5 + -9 = -4 -4 + 2x = 7x + 4 + -5x Reorder the terms: -4 + 2x = 4 + 7x + -5x Combine like terms: 7x + -5x = 2x -4 + 2x = 4 + 2x Add '-2x' to each side of the equation. -4 + 2x + -2x = 4 + 2x + -2x Combine like terms: 2x + -2x = 0 -4 + 0 = 4 + 2x + -2x -4 = 4 + 2x + -2x Combine like terms: 2x + -2x = 0 -4 = 4 + 0 -4 = 4 Solving -4 = 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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