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