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Simplifying 421 = r(8.25) Reorder the terms for easier multiplication: 421 = 8.25r Solving 421 = 8.25r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8.25r' to each side of the equation. 421 + -8.25r = 8.25r + -8.25r Combine like terms: 8.25r + -8.25r = 0.00 421 + -8.25r = 0.00 Add '-421' to each side of the equation. 421 + -421 + -8.25r = 0.00 + -421 Combine like terms: 421 + -421 = 0 0 + -8.25r = 0.00 + -421 -8.25r = 0.00 + -421 Combine like terms: 0.00 + -421 = -421 -8.25r = -421 Divide each side by '-8.25'. r = 51.03030303 Simplifying r = 51.03030303
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