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Simplifying 2r + -20 = 25 + -3r Reorder the terms: -20 + 2r = 25 + -3r Solving -20 + 2r = 25 + -3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '3r' to each side of the equation. -20 + 2r + 3r = 25 + -3r + 3r Combine like terms: 2r + 3r = 5r -20 + 5r = 25 + -3r + 3r Combine like terms: -3r + 3r = 0 -20 + 5r = 25 + 0 -20 + 5r = 25 Add '20' to each side of the equation. -20 + 20 + 5r = 25 + 20 Combine like terms: -20 + 20 = 0 0 + 5r = 25 + 20 5r = 25 + 20 Combine like terms: 25 + 20 = 45 5r = 45 Divide each side by '5'. r = 9 Simplifying r = 9
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