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Simplifying -1(2x + 9) = -2x + 4 Reorder the terms: -1(9 + 2x) = -2x + 4 (9 * -1 + 2x * -1) = -2x + 4 (-9 + -2x) = -2x + 4 Reorder the terms: -9 + -2x = 4 + -2x Add '2x' to each side of the equation. -9 + -2x + 2x = 4 + -2x + 2x Combine like terms: -2x + 2x = 0 -9 + 0 = 4 + -2x + 2x -9 = 4 + -2x + 2x Combine like terms: -2x + 2x = 0 -9 = 4 + 0 -9 = 4 Solving -9 = 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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