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Simplifying -12(x + 3) = 4(-1 + -3x) Reorder the terms: -12(3 + x) = 4(-1 + -3x) (3 * -12 + x * -12) = 4(-1 + -3x) (-36 + -12x) = 4(-1 + -3x) -36 + -12x = (-1 * 4 + -3x * 4) -36 + -12x = (-4 + -12x) Add '12x' to each side of the equation. -36 + -12x + 12x = -4 + -12x + 12x Combine like terms: -12x + 12x = 0 -36 + 0 = -4 + -12x + 12x -36 = -4 + -12x + 12x Combine like terms: -12x + 12x = 0 -36 = -4 + 0 -36 = -4 Solving -36 = -4 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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