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Simplifying 9r + -2 = r Reorder the terms: -2 + 9r = r Solving -2 + 9r = r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r' to each side of the equation. -2 + 9r + -1r = r + -1r Combine like terms: 9r + -1r = 8r -2 + 8r = r + -1r Combine like terms: r + -1r = 0 -2 + 8r = 0 Add '2' to each side of the equation. -2 + 2 + 8r = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 8r = 0 + 2 8r = 0 + 2 Combine like terms: 0 + 2 = 2 8r = 2 Divide each side by '8'. r = 0.25 Simplifying r = 0.25
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