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Simplifying (2x + -7) = (2x + 9) Reorder the terms: (-7 + 2x) = (2x + 9) Remove parenthesis around (-7 + 2x) -7 + 2x = (2x + 9) Reorder the terms: -7 + 2x = (9 + 2x) Remove parenthesis around (9 + 2x) -7 + 2x = 9 + 2x Add '-2x' to each side of the equation. -7 + 2x + -2x = 9 + 2x + -2x Combine like terms: 2x + -2x = 0 -7 + 0 = 9 + 2x + -2x -7 = 9 + 2x + -2x Combine like terms: 2x + -2x = 0 -7 = 9 + 0 -7 = 9 Solving -7 = 9 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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