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Simplifying [2x + -7] = [2x + 9] Reorder the terms: [-7 + 2x] = [2x + 9] Remove brackets around [-7 + 2x] -7 + 2x = [2x + 9] Reorder the terms: -7 + 2x = [9 + 2x] Remove brackets 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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