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Simplifying x + 15 = x + -12 Reorder the terms: 15 + x = x + -12 Reorder the terms: 15 + x = -12 + x Add '-1x' to each side of the equation. 15 + x + -1x = -12 + x + -1x Combine like terms: x + -1x = 0 15 + 0 = -12 + x + -1x 15 = -12 + x + -1x Combine like terms: x + -1x = 0 15 = -12 + 0 15 = -12 Solving 15 = -12 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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