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Simplifying 2x + 1 + -2 + x + -7 = 3x + 7 Reorder the terms: 1 + -2 + -7 + 2x + x = 3x + 7 Combine like terms: 1 + -2 = -1 -1 + -7 + 2x + x = 3x + 7 Combine like terms: -1 + -7 = -8 -8 + 2x + x = 3x + 7 Combine like terms: 2x + x = 3x -8 + 3x = 3x + 7 Reorder the terms: -8 + 3x = 7 + 3x Add '-3x' to each side of the equation. -8 + 3x + -3x = 7 + 3x + -3x Combine like terms: 3x + -3x = 0 -8 + 0 = 7 + 3x + -3x -8 = 7 + 3x + -3x Combine like terms: 3x + -3x = 0 -8 = 7 + 0 -8 = 7 Solving -8 = 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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