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Simplifying v2 + -4r + 8 = 5r Reorder the terms: 8 + -4r + v2 = 5r Solving 8 + -4r + v2 = 5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-5r' to each side of the equation. 8 + -4r + -5r + v2 = 5r + -5r Combine like terms: -4r + -5r = -9r 8 + -9r + v2 = 5r + -5r Combine like terms: 5r + -5r = 0 8 + -9r + v2 = 0 Add '-8' to each side of the equation. 8 + -9r + -8 + v2 = 0 + -8 Reorder the terms: 8 + -8 + -9r + v2 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -9r + v2 = 0 + -8 -9r + v2 = 0 + -8 Combine like terms: 0 + -8 = -8 -9r + v2 = -8 Add '-1v2' to each side of the equation. -9r + v2 + -1v2 = -8 + -1v2 Combine like terms: v2 + -1v2 = 0 -9r + 0 = -8 + -1v2 -9r = -8 + -1v2 Divide each side by '-9'. r = 0.8888888889 + 0.1111111111v2 Simplifying r = 0.8888888889 + 0.1111111111v2
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