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Simplifying -2 = 5r + -5 + -8r Reorder the terms: -2 = -5 + 5r + -8r Combine like terms: 5r + -8r = -3r -2 = -5 + -3r Solving -2 = -5 + -3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '3r' to each side of the equation. -2 + 3r = -5 + -3r + 3r Combine like terms: -3r + 3r = 0 -2 + 3r = -5 + 0 -2 + 3r = -5 Add '2' to each side of the equation. -2 + 2 + 3r = -5 + 2 Combine like terms: -2 + 2 = 0 0 + 3r = -5 + 2 3r = -5 + 2 Combine like terms: -5 + 2 = -3 3r = -3 Divide each side by '3'. r = -1 Simplifying r = -1
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