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Simplifying 20 = r(0.5) + 5 Reorder the terms for easier multiplication: 20 = 0.5r + 5 Reorder the terms: 20 = 5 + 0.5r Solving 20 = 5 + 0.5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-0.5r' to each side of the equation. 20 + -0.5r = 5 + 0.5r + -0.5r Combine like terms: 0.5r + -0.5r = 0.0 20 + -0.5r = 5 + 0.0 20 + -0.5r = 5 Add '-20' to each side of the equation. 20 + -20 + -0.5r = 5 + -20 Combine like terms: 20 + -20 = 0 0 + -0.5r = 5 + -20 -0.5r = 5 + -20 Combine like terms: 5 + -20 = -15 -0.5r = -15 Divide each side by '-0.5'. r = 30 Simplifying r = 30
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