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Simplifying 5r2 + 21R + -17 = 3 Reorder the terms: -17 + 21R + 5r2 = 3 Solving -17 + 21R + 5r2 = 3 Solving for variable 'R'. Move all terms containing R to the left, all other terms to the right. Add '17' to each side of the equation. -17 + 21R + 17 + 5r2 = 3 + 17 Reorder the terms: -17 + 17 + 21R + 5r2 = 3 + 17 Combine like terms: -17 + 17 = 0 0 + 21R + 5r2 = 3 + 17 21R + 5r2 = 3 + 17 Combine like terms: 3 + 17 = 20 21R + 5r2 = 20 Add '-5r2' to each side of the equation. 21R + 5r2 + -5r2 = 20 + -5r2 Combine like terms: 5r2 + -5r2 = 0 21R + 0 = 20 + -5r2 21R = 20 + -5r2 Divide each side by '21'. R = 0.9523809524 + -0.2380952381r2 Simplifying R = 0.9523809524 + -0.2380952381r2
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