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Simplifying -2(x + -4) + -20 = 2x + -4(x + -1) Reorder the terms: -2(-4 + x) + -20 = 2x + -4(x + -1) (-4 * -2 + x * -2) + -20 = 2x + -4(x + -1) (8 + -2x) + -20 = 2x + -4(x + -1) Reorder the terms: 8 + -20 + -2x = 2x + -4(x + -1) Combine like terms: 8 + -20 = -12 -12 + -2x = 2x + -4(x + -1) Reorder the terms: -12 + -2x = 2x + -4(-1 + x) -12 + -2x = 2x + (-1 * -4 + x * -4) -12 + -2x = 2x + (4 + -4x) Reorder the terms: -12 + -2x = 4 + 2x + -4x Combine like terms: 2x + -4x = -2x -12 + -2x = 4 + -2x Add '2x' to each side of the equation. -12 + -2x + 2x = 4 + -2x + 2x Combine like terms: -2x + 2x = 0 -12 + 0 = 4 + -2x + 2x -12 = 4 + -2x + 2x Combine like terms: -2x + 2x = 0 -12 = 4 + 0 -12 = 4 Solving -12 = 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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