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Simplifying 3.8r + 3.8(r + 47) = 197 Reorder the terms: 3.8r + 3.8(47 + r) = 197 3.8r + (47 * 3.8 + r * 3.8) = 197 3.8r + (178.6 + 3.8r) = 197 Reorder the terms: 178.6 + 3.8r + 3.8r = 197 Combine like terms: 3.8r + 3.8r = 7.6r 178.6 + 7.6r = 197 Solving 178.6 + 7.6r = 197 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-178.6' to each side of the equation. 178.6 + -178.6 + 7.6r = 197 + -178.6 Combine like terms: 178.6 + -178.6 = 0.0 0.0 + 7.6r = 197 + -178.6 7.6r = 197 + -178.6 Combine like terms: 197 + -178.6 = 18.4 7.6r = 18.4 Divide each side by '7.6'. r = 2.421052632 Simplifying r = 2.421052632
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