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Simplifying 3.14 = 2 * 3.14r Multiply 2 * 3.14 3.14 = 6.28r Solving 3.14 = 6.28r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-6.28r' to each side of the equation. 3.14 + -6.28r = 6.28r + -6.28r Combine like terms: 6.28r + -6.28r = 0.00 3.14 + -6.28r = 0.00 Add '-3.14' to each side of the equation. 3.14 + -3.14 + -6.28r = 0.00 + -3.14 Combine like terms: 3.14 + -3.14 = 0.00 0.00 + -6.28r = 0.00 + -3.14 -6.28r = 0.00 + -3.14 Combine like terms: 0.00 + -3.14 = -3.14 -6.28r = -3.14 Divide each side by '-6.28'. r = 0.5 Simplifying r = 0.5
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