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Simplifying 8r + 9 = r + -257 Reorder the terms: 9 + 8r = r + -257 Reorder the terms: 9 + 8r = -257 + r Solving 9 + 8r = -257 + 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. 9 + 8r + -1r = -257 + r + -1r Combine like terms: 8r + -1r = 7r 9 + 7r = -257 + r + -1r Combine like terms: r + -1r = 0 9 + 7r = -257 + 0 9 + 7r = -257 Add '-9' to each side of the equation. 9 + -9 + 7r = -257 + -9 Combine like terms: 9 + -9 = 0 0 + 7r = -257 + -9 7r = -257 + -9 Combine like terms: -257 + -9 = -266 7r = -266 Divide each side by '7'. r = -38 Simplifying r = -38
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