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