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Simplifying -9(2x + -3) = -81 Reorder the terms: -9(-3 + 2x) = -81 (-3 * -9 + 2x * -9) = -81 (27 + -18x) = -81 Solving 27 + -18x = -81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-27' to each side of the equation. 27 + -27 + -18x = -81 + -27 Combine like terms: 27 + -27 = 0 0 + -18x = -81 + -27 -18x = -81 + -27 Combine like terms: -81 + -27 = -108 -18x = -108 Divide each side by '-18'. x = 6 Simplifying x = 6
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