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Simplifying -3 = -30 + -9r Solving -3 = -30 + -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. -3 + 9r = -30 + -9r + 9r Combine like terms: -9r + 9r = 0 -3 + 9r = -30 + 0 -3 + 9r = -30 Add '3' to each side of the equation. -3 + 3 + 9r = -30 + 3 Combine like terms: -3 + 3 = 0 0 + 9r = -30 + 3 9r = -30 + 3 Combine like terms: -30 + 3 = -27 9r = -27 Divide each side by '9'. r = -3 Simplifying r = -3
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