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