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Simplifying 7x + 5x + -1 = 3(4x + 2) Reorder the terms: -1 + 7x + 5x = 3(4x + 2) Combine like terms: 7x + 5x = 12x -1 + 12x = 3(4x + 2) Reorder the terms: -1 + 12x = 3(2 + 4x) -1 + 12x = (2 * 3 + 4x * 3) -1 + 12x = (6 + 12x) Add '-12x' to each side of the equation. -1 + 12x + -12x = 6 + 12x + -12x Combine like terms: 12x + -12x = 0 -1 + 0 = 6 + 12x + -12x -1 = 6 + 12x + -12x Combine like terms: 12x + -12x = 0 -1 = 6 + 0 -1 = 6 Solving -1 = 6 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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