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Simplifying 9x + 18 = 9(x + 9) Reorder the terms: 18 + 9x = 9(x + 9) Reorder the terms: 18 + 9x = 9(9 + x) 18 + 9x = (9 * 9 + x * 9) 18 + 9x = (81 + 9x) Add '-9x' to each side of the equation. 18 + 9x + -9x = 81 + 9x + -9x Combine like terms: 9x + -9x = 0 18 + 0 = 81 + 9x + -9x 18 = 81 + 9x + -9x Combine like terms: 9x + -9x = 0 18 = 81 + 0 18 = 81 Solving 18 = 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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