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Simplifying 9 = 81r Solving 9 = 81r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-81r' to each side of the equation. 9 + -81r = 81r + -81r Combine like terms: 81r + -81r = 0 9 + -81r = 0 Add '-9' to each side of the equation. 9 + -9 + -81r = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -81r = 0 + -9 -81r = 0 + -9 Combine like terms: 0 + -9 = -9 -81r = -9 Divide each side by '-81'. r = 0.1111111111 Simplifying r = 0.1111111111
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