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Simplifying 2r + 20 = 55 + -3r Reorder the terms: 20 + 2r = 55 + -3r Solving 20 + 2r = 55 + -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 = 55 + -3r + 3r Combine like terms: 2r + 3r = 5r 20 + 5r = 55 + -3r + 3r Combine like terms: -3r + 3r = 0 20 + 5r = 55 + 0 20 + 5r = 55 Add '-20' to each side of the equation. 20 + -20 + 5r = 55 + -20 Combine like terms: 20 + -20 = 0 0 + 5r = 55 + -20 5r = 55 + -20 Combine like terms: 55 + -20 = 35 5r = 35 Divide each side by '5'. r = 7 Simplifying r = 7
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