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Simplifying x + 129 = x + 69 Reorder the terms: 129 + x = x + 69 Reorder the terms: 129 + x = 69 + x Add '-1x' to each side of the equation. 129 + x + -1x = 69 + x + -1x Combine like terms: x + -1x = 0 129 + 0 = 69 + x + -1x 129 = 69 + x + -1x Combine like terms: x + -1x = 0 129 = 69 + 0 129 = 69 Solving 129 = 69 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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