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Simplifying 9 = -2r + 2 Reorder the terms: 9 = 2 + -2r Solving 9 = 2 + -2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2r' to each side of the equation. 9 + 2r = 2 + -2r + 2r Combine like terms: -2r + 2r = 0 9 + 2r = 2 + 0 9 + 2r = 2 Add '-9' to each side of the equation. 9 + -9 + 2r = 2 + -9 Combine like terms: 9 + -9 = 0 0 + 2r = 2 + -9 2r = 2 + -9 Combine like terms: 2 + -9 = -7 2r = -7 Divide each side by '2'. r = -3.5 Simplifying r = -3.5
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