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Simplifying 2r + -30 = 65 + 65 Reorder the terms: -30 + 2r = 65 + 65 Combine like terms: 65 + 65 = 130 -30 + 2r = 130 Solving -30 + 2r = 130 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + 2r = 130 + 30 Combine like terms: -30 + 30 = 0 0 + 2r = 130 + 30 2r = 130 + 30 Combine like terms: 130 + 30 = 160 2r = 160 Divide each side by '2'. r = 80 Simplifying r = 80
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