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Simplifying 9(x + -1) + 3 = 4x + 5(-1 + x) Reorder the terms: 9(-1 + x) + 3 = 4x + 5(-1 + x) (-1 * 9 + x * 9) + 3 = 4x + 5(-1 + x) (-9 + 9x) + 3 = 4x + 5(-1 + x) Reorder the terms: -9 + 3 + 9x = 4x + 5(-1 + x) Combine like terms: -9 + 3 = -6 -6 + 9x = 4x + 5(-1 + x) -6 + 9x = 4x + (-1 * 5 + x * 5) -6 + 9x = 4x + (-5 + 5x) Reorder the terms: -6 + 9x = -5 + 4x + 5x Combine like terms: 4x + 5x = 9x -6 + 9x = -5 + 9x Add '-9x' to each side of the equation. -6 + 9x + -9x = -5 + 9x + -9x Combine like terms: 9x + -9x = 0 -6 + 0 = -5 + 9x + -9x -6 = -5 + 9x + -9x Combine like terms: 9x + -9x = 0 -6 = -5 + 0 -6 = -5 Solving -6 = -5 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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