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Simplifying -3(x + -4) = -12 + -3x Reorder the terms: -3(-4 + x) = -12 + -3x (-4 * -3 + x * -3) = -12 + -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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