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Simplifying 9r + -11 = 7r + 11 Reorder the terms: -11 + 9r = 7r + 11 Reorder the terms: -11 + 9r = 11 + 7r Solving -11 + 9r = 11 + 7r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7r' to each side of the equation. -11 + 9r + -7r = 11 + 7r + -7r Combine like terms: 9r + -7r = 2r -11 + 2r = 11 + 7r + -7r Combine like terms: 7r + -7r = 0 -11 + 2r = 11 + 0 -11 + 2r = 11 Add '11' to each side of the equation. -11 + 11 + 2r = 11 + 11 Combine like terms: -11 + 11 = 0 0 + 2r = 11 + 11 2r = 11 + 11 Combine like terms: 11 + 11 = 22 2r = 22 Divide each side by '2'. r = 11 Simplifying r = 11
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