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Simplifying 79 = 2 * 3.14r Multiply 2 * 3.14 79 = 6.28r Solving 79 = 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. 79 + -6.28r = 6.28r + -6.28r Combine like terms: 6.28r + -6.28r = 0.00 79 + -6.28r = 0.00 Add '-79' to each side of the equation. 79 + -79 + -6.28r = 0.00 + -79 Combine like terms: 79 + -79 = 0 0 + -6.28r = 0.00 + -79 -6.28r = 0.00 + -79 Combine like terms: 0.00 + -79 = -79 -6.28r = -79 Divide each side by '-6.28'. r = 12.57961783 Simplifying r = 12.57961783
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