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Simplifying 20r + -12s + 11r = 0 Reorder the terms: 20r + 11r + -12s = 0 Combine like terms: 20r + 11r = 31r 31r + -12s = 0 Solving 31r + -12s = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '12s' to each side of the equation. 31r + -12s + 12s = 0 + 12s Combine like terms: -12s + 12s = 0 31r + 0 = 0 + 12s 31r = 0 + 12s Remove the zero: 31r = 12s Divide each side by '31'. r = 0.3870967742s Simplifying r = 0.3870967742s
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