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Simplifying 9r + -20 = 48 + 2r Reorder the terms: -20 + 9r = 48 + 2r Solving -20 + 9r = 48 + 2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2r' to each side of the equation. -20 + 9r + -2r = 48 + 2r + -2r Combine like terms: 9r + -2r = 7r -20 + 7r = 48 + 2r + -2r Combine like terms: 2r + -2r = 0 -20 + 7r = 48 + 0 -20 + 7r = 48 Add '20' to each side of the equation. -20 + 20 + 7r = 48 + 20 Combine like terms: -20 + 20 = 0 0 + 7r = 48 + 20 7r = 48 + 20 Combine like terms: 48 + 20 = 68 7r = 68 Divide each side by '7'. r = 9.714285714 Simplifying r = 9.714285714
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