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Simplifying 82 + 40 = 2r Combine like terms: 82 + 40 = 122 122 = 2r Solving 122 = 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. 122 + -2r = 2r + -2r Combine like terms: 2r + -2r = 0 122 + -2r = 0 Add '-122' to each side of the equation. 122 + -122 + -2r = 0 + -122 Combine like terms: 122 + -122 = 0 0 + -2r = 0 + -122 -2r = 0 + -122 Combine like terms: 0 + -122 = -122 -2r = -122 Divide each side by '-2'. r = 61 Simplifying r = 61
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