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Simplifying 47.1 = 3.14(r)(6) Reorder the terms for easier multiplication: 47.1 = 3.14 * 6r Multiply 3.14 * 6 47.1 = 18.84r Solving 47.1 = 18.84r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-18.84r' to each side of the equation. 47.1 + -18.84r = 18.84r + -18.84r Combine like terms: 18.84r + -18.84r = 0.00 47.1 + -18.84r = 0.00 Add '-47.1' to each side of the equation. 47.1 + -47.1 + -18.84r = 0.00 + -47.1 Combine like terms: 47.1 + -47.1 = 0.0 0.0 + -18.84r = 0.00 + -47.1 -18.84r = 0.00 + -47.1 Combine like terms: 0.00 + -47.1 = -47.1 -18.84r = -47.1 Divide each side by '-18.84'. r = 2.5 Simplifying r = 2.5
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