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Simplifying 150.72 = 2r * 3.14 Reorder the terms for easier multiplication: 150.72 = 2 * 3.14r Multiply 2 * 3.14 150.72 = 6.28r Solving 150.72 = 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. 150.72 + -6.28r = 6.28r + -6.28r Combine like terms: 6.28r + -6.28r = 0.00 150.72 + -6.28r = 0.00 Add '-150.72' to each side of the equation. 150.72 + -150.72 + -6.28r = 0.00 + -150.72 Combine like terms: 150.72 + -150.72 = 0.00 0.00 + -6.28r = 0.00 + -150.72 -6.28r = 0.00 + -150.72 Combine like terms: 0.00 + -150.72 = -150.72 -6.28r = -150.72 Divide each side by '-6.28'. r = 24 Simplifying r = 24
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