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Simplifying 78.5 = 3.14r Solving 78.5 = 3.14r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3.14r' to each side of the equation. 78.5 + -3.14r = 3.14r + -3.14r Combine like terms: 3.14r + -3.14r = 0.00 78.5 + -3.14r = 0.00 Add '-78.5' to each side of the equation. 78.5 + -78.5 + -3.14r = 0.00 + -78.5 Combine like terms: 78.5 + -78.5 = 0.0 0.0 + -3.14r = 0.00 + -78.5 -3.14r = 0.00 + -78.5 Combine like terms: 0.00 + -78.5 = -78.5 -3.14r = -78.5 Divide each side by '-3.14'. r = 25 Simplifying r = 25
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