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Simplifying 2r + -8 = 4 + 5r Reorder the terms: -8 + 2r = 4 + 5r Solving -8 + 2r = 4 + 5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-5r' to each side of the equation. -8 + 2r + -5r = 4 + 5r + -5r Combine like terms: 2r + -5r = -3r -8 + -3r = 4 + 5r + -5r Combine like terms: 5r + -5r = 0 -8 + -3r = 4 + 0 -8 + -3r = 4 Add '8' to each side of the equation. -8 + 8 + -3r = 4 + 8 Combine like terms: -8 + 8 = 0 0 + -3r = 4 + 8 -3r = 4 + 8 Combine like terms: 4 + 8 = 12 -3r = 12 Divide each side by '-3'. r = -4 Simplifying r = -4
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