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Simplifying 9.9 = 1.8r Solving 9.9 = 1.8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1.8r' to each side of the equation. 9.9 + -1.8r = 1.8r + -1.8r Combine like terms: 1.8r + -1.8r = 0.0 9.9 + -1.8r = 0.0 Add '-9.9' to each side of the equation. 9.9 + -9.9 + -1.8r = 0.0 + -9.9 Combine like terms: 9.9 + -9.9 = 0.0 0.0 + -1.8r = 0.0 + -9.9 -1.8r = 0.0 + -9.9 Combine like terms: 0.0 + -9.9 = -9.9 -1.8r = -9.9 Divide each side by '-1.8'. r = 5.5 Simplifying r = 5.5
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