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Simplifying -20 = -3r + -5 Reorder the terms: -20 = -5 + -3r Solving -20 = -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. -20 + 3r = -5 + -3r + 3r Combine like terms: -3r + 3r = 0 -20 + 3r = -5 + 0 -20 + 3r = -5 Add '20' to each side of the equation. -20 + 20 + 3r = -5 + 20 Combine like terms: -20 + 20 = 0 0 + 3r = -5 + 20 3r = -5 + 20 Combine like terms: -5 + 20 = 15 3r = 15 Divide each side by '3'. r = 5 Simplifying r = 5
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