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Simplifying (x + 5) = (x + -7) Reorder the terms: (5 + x) = (x + -7) Remove parenthesis around (5 + x) 5 + x = (x + -7) Reorder the terms: 5 + x = (-7 + x) Remove parenthesis around (-7 + x) 5 + x = -7 + x Add '-1x' to each side of the equation. 5 + x + -1x = -7 + x + -1x Combine like terms: x + -1x = 0 5 + 0 = -7 + x + -1x 5 = -7 + x + -1x Combine like terms: x + -1x = 0 5 = -7 + 0 5 = -7 Solving 5 = -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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