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Simplifying 2r + -5 = 15 Reorder the terms: -5 + 2r = 15 Solving -5 + 2r = 15 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + 2r = 15 + 5 Combine like terms: -5 + 5 = 0 0 + 2r = 15 + 5 2r = 15 + 5 Combine like terms: 15 + 5 = 20 2r = 20 Divide each side by '2'. r = 10 Simplifying r = 10
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