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