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Simplifying 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 = 11 2x = 11 Divide each side by '2'. x = 5.5 Simplifying x = 5.5
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