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Simplifying r + -89 = -2r + -8 Reorder the terms: -89 + r = -2r + -8 Reorder the terms: -89 + r = -8 + -2r Solving -89 + r = -8 + -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. -89 + r + 2r = -8 + -2r + 2r Combine like terms: r + 2r = 3r -89 + 3r = -8 + -2r + 2r Combine like terms: -2r + 2r = 0 -89 + 3r = -8 + 0 -89 + 3r = -8 Add '89' to each side of the equation. -89 + 89 + 3r = -8 + 89 Combine like terms: -89 + 89 = 0 0 + 3r = -8 + 89 3r = -8 + 89 Combine like terms: -8 + 89 = 81 3r = 81 Divide each side by '3'. r = 27 Simplifying r = 27
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