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Simplifying 2r + 5s = -9 Solving 2r + 5s = -9 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-5s' to each side of the equation. 2r + 5s + -5s = -9 + -5s Combine like terms: 5s + -5s = 0 2r + 0 = -9 + -5s 2r = -9 + -5s Divide each side by '2'. r = -4.5 + -2.5s Simplifying r = -4.5 + -2.5s
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