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Simplifying 3(x + -4) = -7 + 3x Reorder the terms: 3(-4 + x) = -7 + 3x (-4 * 3 + x * 3) = -7 + 3x (-12 + 3x) = -7 + 3x Add '-3x' to each side of the equation. -12 + 3x + -3x = -7 + 3x + -3x Combine like terms: 3x + -3x = 0 -12 + 0 = -7 + 3x + -3x -12 = -7 + 3x + -3x Combine like terms: 3x + -3x = 0 -12 = -7 + 0 -12 = -7 Solving -12 = -7 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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