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Simplifying x + 3 + -1(x + 5) = 7 Reorder the terms: x + 3 + -1(5 + x) = 7 x + 3 + (5 * -1 + x * -1) = 7 x + 3 + (-5 + -1x) = 7 Reorder the terms: 3 + -5 + x + -1x = 7 Combine like terms: 3 + -5 = -2 -2 + x + -1x = 7 Combine like terms: x + -1x = 0 -2 + 0 = 7 -2 = 7 Solving -2 = 7 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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