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