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Simplifying 9x + 63 = 9x + 81 Reorder the terms: 63 + 9x = 9x + 81 Reorder the terms: 63 + 9x = 81 + 9x Add '-9x' to each side of the equation. 63 + 9x + -9x = 81 + 9x + -9x Combine like terms: 9x + -9x = 0 63 + 0 = 81 + 9x + -9x 63 = 81 + 9x + -9x Combine like terms: 9x + -9x = 0 63 = 81 + 0 63 = 81 Solving 63 = 81 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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