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