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Simplifying (X + -1) * 2 = -9 Reorder the terms: (-1 + X) * 2 = -9 Reorder the terms for easier multiplication: 2(-1 + X) = -9 (-1 * 2 + X * 2) = -9 (-2 + 2X) = -9 Solving -2 + 2X = -9 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + 2X = -9 + 2 Combine like terms: -2 + 2 = 0 0 + 2X = -9 + 2 2X = -9 + 2 Combine like terms: -9 + 2 = -7 2X = -7 Divide each side by '2'. X = -3.5 Simplifying X = -3.5
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