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Simplifying D2 + -18d + 81 = 0 Reorder the terms: 81 + D2 + -18d = 0 Solving 81 + D2 + -18d = 0 Solving for variable 'D'. Move all terms containing D to the left, all other terms to the right. Add '-81' to each side of the equation. 81 + D2 + -81 + -18d = 0 + -81 Reorder the terms: 81 + -81 + D2 + -18d = 0 + -81 Combine like terms: 81 + -81 = 0 0 + D2 + -18d = 0 + -81 D2 + -18d = 0 + -81 Combine like terms: 0 + -81 = -81 D2 + -18d = -81 Add '18d' to each side of the equation. D2 + -18d + 18d = -81 + 18d Combine like terms: -18d + 18d = 0 D2 + 0 = -81 + 18d D2 = -81 + 18d Simplifying D2 = -81 + 18d Reorder the terms: 81 + D2 + -18d = -81 + 18d + 81 + -18d Reorder the terms: 81 + D2 + -18d = -81 + 81 + 18d + -18d Combine like terms: -81 + 81 = 0 81 + D2 + -18d = 0 + 18d + -18d 81 + D2 + -18d = 18d + -18d Combine like terms: 18d + -18d = 0 81 + D2 + -18d = 0 The solution to this equation could not be determined.
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