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Simplifying 3x + 12x + -7 = 3(5x + 2) Reorder the terms: -7 + 3x + 12x = 3(5x + 2) Combine like terms: 3x + 12x = 15x -7 + 15x = 3(5x + 2) Reorder the terms: -7 + 15x = 3(2 + 5x) -7 + 15x = (2 * 3 + 5x * 3) -7 + 15x = (6 + 15x) Add '-15x' to each side of the equation. -7 + 15x + -15x = 6 + 15x + -15x Combine like terms: 15x + -15x = 0 -7 + 0 = 6 + 15x + -15x -7 = 6 + 15x + -15x Combine like terms: 15x + -15x = 0 -7 = 6 + 0 -7 = 6 Solving -7 = 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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