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Simplifying 25.1 = 2(3.13) * r Multiply 2 * 3.13 25.1 = 6.26r Solving 25.1 = 6.26r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-6.26r' to each side of the equation. 25.1 + -6.26r = 6.26r + -6.26r Combine like terms: 6.26r + -6.26r = 0.00 25.1 + -6.26r = 0.00 Add '-25.1' to each side of the equation. 25.1 + -25.1 + -6.26r = 0.00 + -25.1 Combine like terms: 25.1 + -25.1 = 0.0 0.0 + -6.26r = 0.00 + -25.1 -6.26r = 0.00 + -25.1 Combine like terms: 0.00 + -25.1 = -25.1 -6.26r = -25.1 Divide each side by '-6.26'. r = 4.009584665 Simplifying r = 4.009584665
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