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Simplifying 2x + 3x + -4x + 1 = 3 + 20x + -7x + -12x Reorder the terms: 1 + 2x + 3x + -4x = 3 + 20x + -7x + -12x Combine like terms: 2x + 3x = 5x 1 + 5x + -4x = 3 + 20x + -7x + -12x Combine like terms: 5x + -4x = 1x 1 + 1x = 3 + 20x + -7x + -12x Combine like terms: 20x + -7x = 13x 1 + 1x = 3 + 13x + -12x Combine like terms: 13x + -12x = 1x 1 + 1x = 3 + 1x Add '-1x' to each side of the equation. 1 + 1x + -1x = 3 + 1x + -1x Combine like terms: 1x + -1x = 0 1 + 0 = 3 + 1x + -1x 1 = 3 + 1x + -1x Combine like terms: 1x + -1x = 0 1 = 3 + 0 1 = 3 Solving 1 = 3 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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