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Simplifying 15x + 9 = 15(x + 9) + 9 Reorder the terms: 9 + 15x = 15(x + 9) + 9 Reorder the terms: 9 + 15x = 15(9 + x) + 9 9 + 15x = (9 * 15 + x * 15) + 9 9 + 15x = (135 + 15x) + 9 Reorder the terms: 9 + 15x = 135 + 9 + 15x Combine like terms: 135 + 9 = 144 9 + 15x = 144 + 15x Add '-15x' to each side of the equation. 9 + 15x + -15x = 144 + 15x + -15x Combine like terms: 15x + -15x = 0 9 + 0 = 144 + 15x + -15x 9 = 144 + 15x + -15x Combine like terms: 15x + -15x = 0 9 = 144 + 0 9 = 144 Solving 9 = 144 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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