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Simplifying 3800 = r(20) Reorder the terms for easier multiplication: 3800 = 20r Solving 3800 = 20r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-20r' to each side of the equation. 3800 + -20r = 20r + -20r Combine like terms: 20r + -20r = 0 3800 + -20r = 0 Add '-3800' to each side of the equation. 3800 + -3800 + -20r = 0 + -3800 Combine like terms: 3800 + -3800 = 0 0 + -20r = 0 + -3800 -20r = 0 + -3800 Combine like terms: 0 + -3800 = -3800 -20r = -3800 Divide each side by '-20'. r = 190 Simplifying r = 190
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