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Simplifying R2 + 20r + -21 = 0 Reorder the terms: -21 + R2 + 20r = 0 Solving -21 + R2 + 20r = 0 Solving for variable 'R'. Move all terms containing R to the left, all other terms to the right. Add '21' to each side of the equation. -21 + R2 + 21 + 20r = 0 + 21 Reorder the terms: -21 + 21 + R2 + 20r = 0 + 21 Combine like terms: -21 + 21 = 0 0 + R2 + 20r = 0 + 21 R2 + 20r = 0 + 21 Combine like terms: 0 + 21 = 21 R2 + 20r = 21 Add '-20r' to each side of the equation. R2 + 20r + -20r = 21 + -20r Combine like terms: 20r + -20r = 0 R2 + 0 = 21 + -20r R2 = 21 + -20r Simplifying R2 = 21 + -20r Reorder the terms: -21 + R2 + 20r = 21 + -20r + -21 + 20r Reorder the terms: -21 + R2 + 20r = 21 + -21 + -20r + 20r Combine like terms: 21 + -21 = 0 -21 + R2 + 20r = 0 + -20r + 20r -21 + R2 + 20r = -20r + 20r Combine like terms: -20r + 20r = 0 -21 + R2 + 20r = 0 The solution to this equation could not be determined.
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