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