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Simplifying 2r + 5t = 9 Solving 2r + 5t = 9 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-5t' to each side of the equation. 2r + 5t + -5t = 9 + -5t Combine like terms: 5t + -5t = 0 2r + 0 = 9 + -5t 2r = 9 + -5t Divide each side by '2'. r = 4.5 + -2.5t Simplifying r = 4.5 + -2.5t
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