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Simplifying 91 = -2r Solving 91 = -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. 91 + 2r = -2r + 2r Combine like terms: -2r + 2r = 0 91 + 2r = 0 Add '-91' to each side of the equation. 91 + -91 + 2r = 0 + -91 Combine like terms: 91 + -91 = 0 0 + 2r = 0 + -91 2r = 0 + -91 Combine like terms: 0 + -91 = -91 2r = -91 Divide each side by '2'. r = -45.5 Simplifying r = -45.5
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