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Simplifying -6.5 = -2r + 13.5 Reorder the terms: -6.5 = 13.5 + -2r Solving -6.5 = 13.5 + -2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2r' to each side of the equation. -6.5 + 2r = 13.5 + -2r + 2r Combine like terms: -2r + 2r = 0 -6.5 + 2r = 13.5 + 0 -6.5 + 2r = 13.5 Add '6.5' to each side of the equation. -6.5 + 6.5 + 2r = 13.5 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + 2r = 13.5 + 6.5 2r = 13.5 + 6.5 Combine like terms: 13.5 + 6.5 = 20 2r = 20 Divide each side by '2'. r = 10 Simplifying r = 10
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