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Simplifying 12x + -7 = 3(4x + 3) Reorder the terms: -7 + 12x = 3(4x + 3) Reorder the terms: -7 + 12x = 3(3 + 4x) -7 + 12x = (3 * 3 + 4x * 3) -7 + 12x = (9 + 12x) Add '-12x' to each side of the equation. -7 + 12x + -12x = 9 + 12x + -12x Combine like terms: 12x + -12x = 0 -7 + 0 = 9 + 12x + -12x -7 = 9 + 12x + -12x Combine like terms: 12x + -12x = 0 -7 = 9 + 0 -7 = 9 Solving -7 = 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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