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Simplifying R2 + 18r + 81 = 0 Reorder the terms: 81 + R2 + 18r = 0 Solving 81 + R2 + 18r = 0 Solving for variable 'R'. Move all terms containing R to the left, all other terms to the right. Add '-81' to each side of the equation. 81 + R2 + -81 + 18r = 0 + -81 Reorder the terms: 81 + -81 + R2 + 18r = 0 + -81 Combine like terms: 81 + -81 = 0 0 + R2 + 18r = 0 + -81 R2 + 18r = 0 + -81 Combine like terms: 0 + -81 = -81 R2 + 18r = -81 Add '-18r' to each side of the equation. R2 + 18r + -18r = -81 + -18r Combine like terms: 18r + -18r = 0 R2 + 0 = -81 + -18r R2 = -81 + -18r Simplifying R2 = -81 + -18r Reorder the terms: 81 + R2 + 18r = -81 + -18r + 81 + 18r Reorder the terms: 81 + R2 + 18r = -81 + 81 + -18r + 18r Combine like terms: -81 + 81 = 0 81 + R2 + 18r = 0 + -18r + 18r 81 + R2 + 18r = -18r + 18r Combine like terms: -18r + 18r = 0 81 + R2 + 18r = 0 The solution to this equation could not be determined.
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