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Simplifying 126 = -9r Solving 126 = -9r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '9r' to each side of the equation. 126 + 9r = -9r + 9r Combine like terms: -9r + 9r = 0 126 + 9r = 0 Add '-126' to each side of the equation. 126 + -126 + 9r = 0 + -126 Combine like terms: 126 + -126 = 0 0 + 9r = 0 + -126 9r = 0 + -126 Combine like terms: 0 + -126 = -126 9r = -126 Divide each side by '9'. r = -14 Simplifying r = -14
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