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Simplifying x + 7 + -1(x + 1) = 0 Reorder the terms: x + 7 + -1(1 + x) = 0 x + 7 + (1 * -1 + x * -1) = 0 x + 7 + (-1 + -1x) = 0 Reorder the terms: 7 + -1 + x + -1x = 0 Combine like terms: 7 + -1 = 6 6 + x + -1x = 0 Combine like terms: x + -1x = 0 6 + 0 = 0 6 = 0 Solving 6 = 0 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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