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