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Simplifying 2x + (-2x + -7) = -1 Reorder the terms: 2x + (-7 + -2x) = -1 Remove parenthesis around (-7 + -2x) 2x + -7 + -2x = -1 Reorder the terms: -7 + 2x + -2x = -1 Combine like terms: 2x + -2x = 0 -7 + 0 = -1 -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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