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Simplifying (x + -1) = (x + 3) Reorder the terms: (-1 + x) = (x + 3) Remove parenthesis around (-1 + x) -1 + x = (x + 3) Reorder the terms: -1 + x = (3 + x) Remove parenthesis around (3 + x) -1 + x = 3 + x Add '-1x' to each side of the equation. -1 + x + -1x = 3 + x + -1x Combine like terms: x + -1x = 0 -1 + 0 = 3 + x + -1x -1 = 3 + x + -1x Combine like terms: x + -1x = 0 -1 = 3 + 0 -1 = 3 Solving -1 = 3 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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