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Simplifying 5r + 2 = 20 + -1r Reorder the terms: 2 + 5r = 20 + -1r Solving 2 + 5r = 20 + -1r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add 'r' to each side of the equation. 2 + 5r + r = 20 + -1r + r Combine like terms: 5r + r = 6r 2 + 6r = 20 + -1r + r Combine like terms: -1r + r = 0 2 + 6r = 20 + 0 2 + 6r = 20 Add '-2' to each side of the equation. 2 + -2 + 6r = 20 + -2 Combine like terms: 2 + -2 = 0 0 + 6r = 20 + -2 6r = 20 + -2 Combine like terms: 20 + -2 = 18 6r = 18 Divide each side by '6'. r = 3 Simplifying r = 3
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