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Simplifying 2(x + -9) = -9 Reorder the terms: 2(-9 + x) = -9 (-9 * 2 + x * 2) = -9 (-18 + 2x) = -9 Solving -18 + 2x = -9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + 2x = -9 + 18 Combine like terms: -18 + 18 = 0 0 + 2x = -9 + 18 2x = -9 + 18 Combine like terms: -9 + 18 = 9 2x = 9 Divide each side by '2'. x = 4.5 Simplifying x = 4.5
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