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