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Simplifying 5r + -1s = k Solving 5r + -1s = k Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add 's' to each side of the equation. 5r + -1s + s = k + s Combine like terms: -1s + s = 0 5r + 0 = k + s 5r = k + s Divide each side by '5'. r = 0.2k + 0.2s Simplifying r = 0.2k + 0.2s
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