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Simplifying 9x + 13 = 3(3x + 4) Reorder the terms: 13 + 9x = 3(3x + 4) Reorder the terms: 13 + 9x = 3(4 + 3x) 13 + 9x = (4 * 3 + 3x * 3) 13 + 9x = (12 + 9x) Add '-9x' to each side of the equation. 13 + 9x + -9x = 12 + 9x + -9x Combine like terms: 9x + -9x = 0 13 + 0 = 12 + 9x + -9x 13 = 12 + 9x + -9x Combine like terms: 9x + -9x = 0 13 = 12 + 0 13 = 12 Solving 13 = 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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